diff --git a/autotests/integration/activation_test.cpp b/autotests/integration/activation_test.cpp
index 2758a6deae..c50017bd66 100644
--- a/autotests/integration/activation_test.cpp
+++ b/autotests/integration/activation_test.cpp
@@ -59,14 +59,14 @@ void ActivationTest::initTestCase()
 {
     qRegisterMetaType<AbstractClient *>();
 
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/activities_test.cpp b/autotests/integration/activities_test.cpp
index 838778f302..38da8e1e47 100644
--- a/autotests/integration/activities_test.cpp
+++ b/autotests/integration/activities_test.cpp
@@ -59,15 +59,15 @@ void ActivitiesTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Deleted*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->setUseKActivities(true);
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/colorcorrect_nightcolor_test.cpp b/autotests/integration/colorcorrect_nightcolor_test.cpp
index bc77130c38..b1bc609c28 100644
--- a/autotests/integration/colorcorrect_nightcolor_test.cpp
+++ b/autotests/integration/colorcorrect_nightcolor_test.cpp
@@ -47,8 +47,8 @@ private Q_SLOTS:
 
 void ColorCorrectNightColorTest::initTestCase()
 {
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -56,7 +56,7 @@ void ColorCorrectNightColorTest::initTestCase()
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/dbus_interface_test.cpp b/autotests/integration/dbus_interface_test.cpp
index ef32f5fa28..1170a3a998 100644
--- a/autotests/integration/dbus_interface_test.cpp
+++ b/autotests/integration/dbus_interface_test.cpp
@@ -71,13 +71,13 @@ void TestDbusInterface::initTestCase()
     qRegisterMetaType<KWin::Deleted*>();
     qRegisterMetaType<KWin::AbstractClient*>();
 
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
     VirtualDesktopManager::self()->setCount(4);
 }
diff --git a/autotests/integration/debug_console_test.cpp b/autotests/integration/debug_console_test.cpp
index ffacc62ae6..9afbaf8850 100644
--- a/autotests/integration/debug_console_test.cpp
+++ b/autotests/integration/debug_console_test.cpp
@@ -60,14 +60,14 @@ void DebugConsoleTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient *>();
     qRegisterMetaType<KWin::InternalClient *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/decoration_input_test.cpp b/autotests/integration/decoration_input_test.cpp
index 362cf2f7ac..8a507e9f6b 100644
--- a/autotests/integration/decoration_input_test.cpp
+++ b/autotests/integration/decoration_input_test.cpp
@@ -134,8 +134,8 @@ void DecorationInputTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient *>();
     qRegisterMetaType<KWin::InternalClient *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -150,7 +150,7 @@ void DecorationInputTest::initTestCase()
     kwinApp()->setConfig(config);
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/desktop_window_x11_test.cpp b/autotests/integration/desktop_window_x11_test.cpp
index 859ac4426f..f14b006bb5 100644
--- a/autotests/integration/desktop_window_x11_test.cpp
+++ b/autotests/integration/desktop_window_x11_test.cpp
@@ -54,14 +54,14 @@ void X11DesktopWindowTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Deleted*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/dont_crash_aurorae_destroy_deco.cpp b/autotests/integration/dont_crash_aurorae_destroy_deco.cpp
index 91224e577c..fc6aaea747 100644
--- a/autotests/integration/dont_crash_aurorae_destroy_deco.cpp
+++ b/autotests/integration/dont_crash_aurorae_destroy_deco.cpp
@@ -54,8 +54,8 @@ void DontCrashAuroraeDestroyDecoTest::initTestCase()
 {
     qputenv("XDG_DATA_DIRS", QCoreApplication::applicationDirPath().toUtf8());
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -68,7 +68,7 @@ void DontCrashAuroraeDestroyDecoTest::initTestCase()
     // this test needs to enforce OpenGL compositing to get into the crashy condition
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("O2"));
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/dont_crash_cursor_physical_size_empty.cpp b/autotests/integration/dont_crash_cursor_physical_size_empty.cpp
index bd04017291..2c08d03d8e 100644
--- a/autotests/integration/dont_crash_cursor_physical_size_empty.cpp
+++ b/autotests/integration/dont_crash_cursor_physical_size_empty.cpp
@@ -67,8 +67,8 @@ void DontCrashCursorPhysicalSizeEmpty::cleanup()
 void DontCrashCursorPhysicalSizeEmpty::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -81,7 +81,7 @@ void DontCrashCursorPhysicalSizeEmpty::initTestCase()
     qputenv("XCURSOR_SIZE", QByteArrayLiteral("0"));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
 }
 
 void DontCrashCursorPhysicalSizeEmpty::testMoveCursorOverDeco_data()
diff --git a/autotests/integration/dont_crash_empty_deco.cpp b/autotests/integration/dont_crash_empty_deco.cpp
index a8ee608032..e3eb7fc48c 100644
--- a/autotests/integration/dont_crash_empty_deco.cpp
+++ b/autotests/integration/dont_crash_empty_deco.cpp
@@ -50,8 +50,8 @@ private Q_SLOTS:
 void DontCrashEmptyDecorationTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -59,7 +59,7 @@ void DontCrashEmptyDecorationTest::initTestCase()
     // this test needs to enforce OpenGL compositing to get into the crashy condition
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("O2"));
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/dont_crash_glxgears.cpp b/autotests/integration/dont_crash_glxgears.cpp
index 4179945121..ab00782cf3 100644
--- a/autotests/integration/dont_crash_glxgears.cpp
+++ b/autotests/integration/dont_crash_glxgears.cpp
@@ -44,12 +44,12 @@ private Q_SLOTS:
 void DontCrashGlxgearsTest::initTestCase()
 {
     qRegisterMetaType<KWin::Deleted*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
 }
 
 void DontCrashGlxgearsTest::testGlxgears()
diff --git a/autotests/integration/dont_crash_no_border.cpp b/autotests/integration/dont_crash_no_border.cpp
index a4352630e5..40746db007 100644
--- a/autotests/integration/dont_crash_no_border.cpp
+++ b/autotests/integration/dont_crash_no_border.cpp
@@ -56,8 +56,8 @@ private Q_SLOTS:
 void DontCrashNoBorder::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -70,7 +70,7 @@ void DontCrashNoBorder::initTestCase()
     // this test needs to enforce OpenGL compositing to get into the crashy condition
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("O2"));
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/dont_crash_reinitialize_compositor.cpp b/autotests/integration/dont_crash_reinitialize_compositor.cpp
index d75b769b12..e1eca03f7e 100644
--- a/autotests/integration/dont_crash_reinitialize_compositor.cpp
+++ b/autotests/integration/dont_crash_reinitialize_compositor.cpp
@@ -59,8 +59,8 @@ void DontCrashReinitializeCompositorTest::initTestCase()
 
     qRegisterMetaType<KWin::AbstractClient *>();
     qRegisterMetaType<KWin::Deleted *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -79,7 +79,7 @@ void DontCrashReinitializeCompositorTest::initTestCase()
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", QByteArrayLiteral("1"));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/dont_crash_useractions_menu.cpp b/autotests/integration/dont_crash_useractions_menu.cpp
index 7f9fae0856..32137c7c94 100644
--- a/autotests/integration/dont_crash_useractions_menu.cpp
+++ b/autotests/integration/dont_crash_useractions_menu.cpp
@@ -57,8 +57,8 @@ private Q_SLOTS:
 void TestDontCrashUseractionsMenu::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -67,7 +67,7 @@ void TestDontCrashUseractionsMenu::initTestCase()
     QVERIFY(kwinApp()->setStyle(QStringLiteral("breeze")));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/effects/desktop_switching_animation_test.cpp b/autotests/integration/effects/desktop_switching_animation_test.cpp
index c3736047c1..f1a536b058 100644
--- a/autotests/integration/effects/desktop_switching_animation_test.cpp
+++ b/autotests/integration/effects/desktop_switching_animation_test.cpp
@@ -56,8 +56,8 @@ void DesktopSwitchingAnimationTest::initTestCase()
     qputenv("XDG_DATA_DIRS", QCoreApplication::applicationDirPath().toUtf8());
 
     qRegisterMetaType<KWin::AbstractClient *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -75,7 +75,7 @@ void DesktopSwitchingAnimationTest::initTestCase()
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", QByteArrayLiteral("1"));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 
     auto scene = Compositor::self()->scene();
diff --git a/autotests/integration/effects/maximize_animation_test.cpp b/autotests/integration/effects/maximize_animation_test.cpp
index 5e860d0090..0f549e856e 100644
--- a/autotests/integration/effects/maximize_animation_test.cpp
+++ b/autotests/integration/effects/maximize_animation_test.cpp
@@ -56,8 +56,8 @@ void MaximizeAnimationTest::initTestCase()
     qputenv("XDG_DATA_DIRS", QCoreApplication::applicationDirPath().toUtf8());
 
     qRegisterMetaType<KWin::AbstractClient *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -74,7 +74,7 @@ void MaximizeAnimationTest::initTestCase()
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", QByteArrayLiteral("1"));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/effects/minimize_animation_test.cpp b/autotests/integration/effects/minimize_animation_test.cpp
index c4e2086f5e..c4148d7b4d 100644
--- a/autotests/integration/effects/minimize_animation_test.cpp
+++ b/autotests/integration/effects/minimize_animation_test.cpp
@@ -58,8 +58,8 @@ void MinimizeAnimationTest::initTestCase()
     qputenv("XDG_DATA_DIRS", QCoreApplication::applicationDirPath().toUtf8());
 
     qRegisterMetaType<KWin::AbstractClient *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -77,7 +77,7 @@ void MinimizeAnimationTest::initTestCase()
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", QByteArrayLiteral("1"));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 
     auto scene = Compositor::self()->scene();
diff --git a/autotests/integration/effects/popup_open_close_animation_test.cpp b/autotests/integration/effects/popup_open_close_animation_test.cpp
index a1b8df54af..aec204b0c7 100644
--- a/autotests/integration/effects/popup_open_close_animation_test.cpp
+++ b/autotests/integration/effects/popup_open_close_animation_test.cpp
@@ -65,8 +65,8 @@ void PopupOpenCloseAnimationTest::initTestCase()
     qRegisterMetaType<KWin::AbstractClient *>();
     qRegisterMetaType<KWin::Deleted *>();
     qRegisterMetaType<KWin::InternalClient *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -83,7 +83,7 @@ void PopupOpenCloseAnimationTest::initTestCase()
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", QByteArrayLiteral("1"));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/effects/scripted_effects_test.cpp b/autotests/integration/effects/scripted_effects_test.cpp
index 6bd4b41de6..bf065c211a 100644
--- a/autotests/integration/effects/scripted_effects_test.cpp
+++ b/autotests/integration/effects/scripted_effects_test.cpp
@@ -146,8 +146,8 @@ void ScriptedEffectsTest::initTestCase()
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Deleted*>();
     qRegisterMetaType<KWin::Effect*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -167,7 +167,7 @@ void ScriptedEffectsTest::initTestCase()
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("O2"));
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", "1");
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(Compositor::self());
 
     auto scene = KWin::Compositor::self()->scene();
diff --git a/autotests/integration/effects/slidingpopups_test.cpp b/autotests/integration/effects/slidingpopups_test.cpp
index ae438f3ce9..ab5d615f76 100644
--- a/autotests/integration/effects/slidingpopups_test.cpp
+++ b/autotests/integration/effects/slidingpopups_test.cpp
@@ -63,8 +63,8 @@ void SlidingPopupsTest::initTestCase()
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Deleted*>();
     qRegisterMetaType<KWin::Effect*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -87,7 +87,7 @@ void SlidingPopupsTest::initTestCase()
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("O2"));
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", "1");
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(Compositor::self());
 
     auto scene = KWin::Compositor::self()->scene();
diff --git a/autotests/integration/effects/toplevel_open_close_animation_test.cpp b/autotests/integration/effects/toplevel_open_close_animation_test.cpp
index 429046e5bb..c7d9990be4 100644
--- a/autotests/integration/effects/toplevel_open_close_animation_test.cpp
+++ b/autotests/integration/effects/toplevel_open_close_animation_test.cpp
@@ -60,8 +60,8 @@ void ToplevelOpenCloseAnimationTest::initTestCase()
 
     qRegisterMetaType<KWin::AbstractClient *>();
     qRegisterMetaType<KWin::Deleted *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -79,7 +79,7 @@ void ToplevelOpenCloseAnimationTest::initTestCase()
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", QByteArrayLiteral("1"));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 
     auto scene = KWin::Compositor::self()->scene();
diff --git a/autotests/integration/effects/translucency_test.cpp b/autotests/integration/effects/translucency_test.cpp
index a5a69cecb9..e28235abff 100644
--- a/autotests/integration/effects/translucency_test.cpp
+++ b/autotests/integration/effects/translucency_test.cpp
@@ -56,8 +56,8 @@ void TranslucencyTest::initTestCase()
     qputenv("XDG_DATA_DIRS", QCoreApplication::applicationDirPath().toUtf8());
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Effect*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -77,7 +77,7 @@ void TranslucencyTest::initTestCase()
 
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", "1");
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(Compositor::self());
 }
 
diff --git a/autotests/integration/effects/windowgeometry_test.cpp b/autotests/integration/effects/windowgeometry_test.cpp
index 1e7d172301..cd1330e08a 100644
--- a/autotests/integration/effects/windowgeometry_test.cpp
+++ b/autotests/integration/effects/windowgeometry_test.cpp
@@ -52,8 +52,8 @@ void WindowGeometryTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Effect*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -72,7 +72,7 @@ void WindowGeometryTest::initTestCase()
 
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", "1");
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(KWin::Compositor::self());
 }
 
diff --git a/autotests/integration/effects/wobbly_shade_test.cpp b/autotests/integration/effects/wobbly_shade_test.cpp
index e07780b951..5fd98199e7 100644
--- a/autotests/integration/effects/wobbly_shade_test.cpp
+++ b/autotests/integration/effects/wobbly_shade_test.cpp
@@ -56,8 +56,8 @@ void WobblyWindowsShadeTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Effect*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -76,7 +76,7 @@ void WobblyWindowsShadeTest::initTestCase()
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("O2"));
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", "1");
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(Compositor::self());
 
     auto scene = KWin::Compositor::self()->scene();
diff --git a/autotests/integration/generic_scene_opengl_test.cpp b/autotests/integration/generic_scene_opengl_test.cpp
index 14f1c92719..8d7acb1d93 100644
--- a/autotests/integration/generic_scene_opengl_test.cpp
+++ b/autotests/integration/generic_scene_opengl_test.cpp
@@ -50,8 +50,8 @@ void GenericSceneOpenGLTest::cleanup()
 void GenericSceneOpenGLTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -72,7 +72,7 @@ void GenericSceneOpenGLTest::initTestCase()
     qputenv("KWIN_COMPOSE", m_envVariable);
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(Compositor::self());
 
     auto scene = KWin::Compositor::self()->scene();
diff --git a/autotests/integration/globalshortcuts_test.cpp b/autotests/integration/globalshortcuts_test.cpp
index 7419827045..068b1b6aa9 100644
--- a/autotests/integration/globalshortcuts_test.cpp
+++ b/autotests/integration/globalshortcuts_test.cpp
@@ -64,8 +64,8 @@ void GlobalShortcutsTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient *>();
     qRegisterMetaType<KWin::InternalClient *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -74,7 +74,7 @@ void GlobalShortcutsTest::initTestCase()
     qputenv("XKB_DEFAULT_RULES", "evdev");
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/idle_inhibition_test.cpp b/autotests/integration/idle_inhibition_test.cpp
index 26a477bf94..05e1c72c3d 100644
--- a/autotests/integration/idle_inhibition_test.cpp
+++ b/autotests/integration/idle_inhibition_test.cpp
@@ -56,14 +56,14 @@ void TestIdleInhibition::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
 
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/input_stacking_order.cpp b/autotests/integration/input_stacking_order.cpp
index b940f86470..b3359408db 100644
--- a/autotests/integration/input_stacking_order.cpp
+++ b/autotests/integration/input_stacking_order.cpp
@@ -62,14 +62,14 @@ void InputStackingOrderTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Deleted*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/internal_window.cpp b/autotests/integration/internal_window.cpp
index caa5b96ed2..fb48db92b2 100644
--- a/autotests/integration/internal_window.cpp
+++ b/autotests/integration/internal_window.cpp
@@ -184,15 +184,15 @@ void InternalWindowTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient *>();
     qRegisterMetaType<KWin::InternalClient *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/keyboard_layout_test.cpp b/autotests/integration/keyboard_layout_test.cpp
index d9de5f12f3..dba385190e 100644
--- a/autotests/integration/keyboard_layout_test.cpp
+++ b/autotests/integration/keyboard_layout_test.cpp
@@ -75,8 +75,8 @@ void KeyboardLayoutTest::reconfigureLayouts()
 void KeyboardLayoutTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -84,7 +84,7 @@ void KeyboardLayoutTest::initTestCase()
     kwinApp()->setKxkbConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/keymap_creation_failure_test.cpp b/autotests/integration/keymap_creation_failure_test.cpp
index 069c677f06..c986572c4f 100644
--- a/autotests/integration/keymap_creation_failure_test.cpp
+++ b/autotests/integration/keymap_creation_failure_test.cpp
@@ -58,8 +58,8 @@ void KeymapCreationFailureTest::initTestCase()
     qputenv("XKB_DEFAULT_OPTIONS", "no");
 
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -72,7 +72,7 @@ void KeymapCreationFailureTest::initTestCase()
     layoutGroup.sync();
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/kwin_wayland_test.cpp b/autotests/integration/kwin_wayland_test.cpp
index b0b3406419..198ffa4145 100644
--- a/autotests/integration/kwin_wayland_test.cpp
+++ b/autotests/integration/kwin_wayland_test.cpp
@@ -136,6 +136,7 @@ void WaylandTestApplication::finalizeStartup()
         disconnect(m_xwayland, &Xwl::Xwayland::initialized, this, &WaylandTestApplication::finalizeStartup);
     }
     createWorkspace();
+    notifyStarted();
 }
 
 void WaylandTestApplication::continueStartupWithScene()
diff --git a/autotests/integration/kwinbindings_test.cpp b/autotests/integration/kwinbindings_test.cpp
index ba86bd1406..eabe1d0ca0 100644
--- a/autotests/integration/kwinbindings_test.cpp
+++ b/autotests/integration/kwinbindings_test.cpp
@@ -58,15 +58,15 @@ private Q_SLOTS:
 void KWinBindingsTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/lockscreen.cpp b/autotests/integration/lockscreen.cpp
index 02b3e1f12e..ce9fe6b272 100644
--- a/autotests/integration/lockscreen.cpp
+++ b/autotests/integration/lockscreen.cpp
@@ -184,15 +184,15 @@ AbstractClient *LockScreenTest::showWindow()
 void LockScreenTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("O2"));
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/maximize_test.cpp b/autotests/integration/maximize_test.cpp
index 326dd23803..c0eee6cf4b 100644
--- a/autotests/integration/maximize_test.cpp
+++ b/autotests/integration/maximize_test.cpp
@@ -61,8 +61,8 @@ private Q_SLOTS:
 void TestMaximized::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -70,7 +70,7 @@ void TestMaximized::initTestCase()
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/modifier_only_shortcut_test.cpp b/autotests/integration/modifier_only_shortcut_test.cpp
index a974727d53..37e383f4d0 100644
--- a/autotests/integration/modifier_only_shortcut_test.cpp
+++ b/autotests/integration/modifier_only_shortcut_test.cpp
@@ -90,8 +90,8 @@ void Target::shortcut()
 
 void ModifierOnlyShortcutTest::initTestCase()
 {
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -100,7 +100,7 @@ void ModifierOnlyShortcutTest::initTestCase()
     qputenv("XKB_DEFAULT_RULES", "evdev");
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/move_resize_window_test.cpp b/autotests/integration/move_resize_window_test.cpp
index 01c4a8b9bb..f54674d771 100644
--- a/autotests/integration/move_resize_window_test.cpp
+++ b/autotests/integration/move_resize_window_test.cpp
@@ -93,12 +93,12 @@ void MoveResizeWindowTest::initTestCase()
     qRegisterMetaType<KWin::AbstractClient *>();
     qRegisterMetaType<KWin::Deleted *>();
     qRegisterMetaType<KWin::MaximizeMode>("MaximizeMode");
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 1);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
 }
diff --git a/autotests/integration/no_global_shortcuts_test.cpp b/autotests/integration/no_global_shortcuts_test.cpp
index 5b08ea05cc..f86e9a0ca2 100644
--- a/autotests/integration/no_global_shortcuts_test.cpp
+++ b/autotests/integration/no_global_shortcuts_test.cpp
@@ -100,8 +100,8 @@ void Target::shortcut()
 void NoGlobalShortcutsTest::initTestCase()
 {
     qRegisterMetaType<KWin::ElectricBorder>("ElectricBorder");
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit(), KWin::WaylandServer::InitializationFlag::NoGlobalShortcuts));
 
@@ -110,7 +110,7 @@ void NoGlobalShortcutsTest::initTestCase()
     qputenv("XKB_DEFAULT_RULES", "evdev");
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/placement_test.cpp b/autotests/integration/placement_test.cpp
index 22ecee9ec0..f1eea04e1c 100644
--- a/autotests/integration/placement_test.cpp
+++ b/autotests/integration/placement_test.cpp
@@ -91,8 +91,8 @@ void TestPlacement::cleanup()
 void TestPlacement::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -100,7 +100,7 @@ void TestPlacement::initTestCase()
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/plasma_surface_test.cpp b/autotests/integration/plasma_surface_test.cpp
index a19502b341..35d990e3ef 100644
--- a/autotests/integration/plasma_surface_test.cpp
+++ b/autotests/integration/plasma_surface_test.cpp
@@ -71,12 +71,12 @@ private:
 void PlasmaSurfaceTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient *>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
 }
 
 void PlasmaSurfaceTest::init()
diff --git a/autotests/integration/plasmawindow_test.cpp b/autotests/integration/plasmawindow_test.cpp
index a14a87c0e7..890f0c0676 100644
--- a/autotests/integration/plasmawindow_test.cpp
+++ b/autotests/integration/plasmawindow_test.cpp
@@ -68,14 +68,14 @@ private:
 void PlasmaWindowTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/platformcursor.cpp b/autotests/integration/platformcursor.cpp
index 0f5b188cb8..a9b253583f 100644
--- a/autotests/integration/platformcursor.cpp
+++ b/autotests/integration/platformcursor.cpp
@@ -37,12 +37,12 @@ private Q_SLOTS:
 
 void PlatformCursorTest::initTestCase()
 {
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
 }
 
 void PlatformCursorTest::testPos()
diff --git a/autotests/integration/pointer_constraints_test.cpp b/autotests/integration/pointer_constraints_test.cpp
index adbf351bc9..ed52695c0e 100644
--- a/autotests/integration/pointer_constraints_test.cpp
+++ b/autotests/integration/pointer_constraints_test.cpp
@@ -70,8 +70,8 @@ void TestPointerConstraints::initTestCase()
 {
     qRegisterMetaType<PointerFunc>();
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -86,7 +86,7 @@ void TestPointerConstraints::initTestCase()
 
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/pointer_input.cpp b/autotests/integration/pointer_input.cpp
index e9999c387d..0f7ddccb75 100644
--- a/autotests/integration/pointer_input.cpp
+++ b/autotests/integration/pointer_input.cpp
@@ -148,8 +148,8 @@ void PointerInputTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Deleted*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -166,7 +166,7 @@ void PointerInputTest::initTestCase()
     qputenv("XKB_DEFAULT_RULES", "evdev");
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/quick_tiling_test.cpp b/autotests/integration/quick_tiling_test.cpp
index f5f5264325..c78f8d756b 100644
--- a/autotests/integration/quick_tiling_test.cpp
+++ b/autotests/integration/quick_tiling_test.cpp
@@ -93,8 +93,8 @@ void QuickTilingTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::MaximizeMode>("MaximizeMode");
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -110,7 +110,7 @@ void QuickTilingTest::initTestCase()
     qputenv("XKB_DEFAULT_RULES", "evdev");
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/scene_opengl_shadow_test.cpp b/autotests/integration/scene_opengl_shadow_test.cpp
index df075a4309..012f543e04 100644
--- a/autotests/integration/scene_opengl_shadow_test.cpp
+++ b/autotests/integration/scene_opengl_shadow_test.cpp
@@ -113,8 +113,8 @@ void SceneOpenGLShadowTest::initTestCase()
     // Copied from generic_scene_opengl_test.cpp
 
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -135,7 +135,7 @@ void SceneOpenGLShadowTest::initTestCase()
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("O2"));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(KWin::Compositor::self());
 
     // Add directory with fake decorations to the plugin search path.
diff --git a/autotests/integration/scene_qpainter_shadow_test.cpp b/autotests/integration/scene_qpainter_shadow_test.cpp
index cba443788b..5736f92886 100644
--- a/autotests/integration/scene_qpainter_shadow_test.cpp
+++ b/autotests/integration/scene_qpainter_shadow_test.cpp
@@ -117,8 +117,8 @@ void SceneQPainterShadowTest::initTestCase()
     // Copied from scene_qpainter_test.cpp
 
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -144,7 +144,7 @@ void SceneQPainterShadowTest::initTestCase()
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("Q"));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(KWin::Compositor::self());
 
     // Add directory with fake decorations to the plugin search path.
diff --git a/autotests/integration/scene_qpainter_test.cpp b/autotests/integration/scene_qpainter_test.cpp
index e972d762f5..c5f48bd526 100644
--- a/autotests/integration/scene_qpainter_test.cpp
+++ b/autotests/integration/scene_qpainter_test.cpp
@@ -68,8 +68,8 @@ void SceneQPainterTest::cleanup()
 void SceneQPainterTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -95,7 +95,7 @@ void SceneQPainterTest::initTestCase()
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("Q"));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(Compositor::self());
 }
 
diff --git a/autotests/integration/screen_changes_test.cpp b/autotests/integration/screen_changes_test.cpp
index 1ee2b4153f..a5a009b417 100644
--- a/autotests/integration/screen_changes_test.cpp
+++ b/autotests/integration/screen_changes_test.cpp
@@ -45,13 +45,13 @@ private Q_SLOTS:
 
 void ScreenChangesTest::initTestCase()
 {
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     setenv("QT_QPA_PLATFORM", "wayland", true);
     waylandServer()->initWorkspace();
 }
diff --git a/autotests/integration/screenedge_client_show_test.cpp b/autotests/integration/screenedge_client_show_test.cpp
index cb9f68d7a0..514d85b69d 100644
--- a/autotests/integration/screenedge_client_show_test.cpp
+++ b/autotests/integration/screenedge_client_show_test.cpp
@@ -52,8 +52,8 @@ void ScreenEdgeClientShowTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Deleted*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -67,7 +67,7 @@ void ScreenEdgeClientShowTest::initTestCase()
     kwinApp()->setConfig(config);
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/scripting/minimizeall_test.cpp b/autotests/integration/scripting/minimizeall_test.cpp
index 3412b44127..ad19c92dcd 100644
--- a/autotests/integration/scripting/minimizeall_test.cpp
+++ b/autotests/integration/scripting/minimizeall_test.cpp
@@ -56,14 +56,14 @@ void MinimizeAllScriptTest::initTestCase()
 
     qRegisterMetaType<AbstractClient *>();
 
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/scripting/screenedge_test.cpp b/autotests/integration/scripting/screenedge_test.cpp
index b06459758c..99a0e2b79c 100644
--- a/autotests/integration/scripting/screenedge_test.cpp
+++ b/autotests/integration/scripting/screenedge_test.cpp
@@ -59,8 +59,8 @@ private:
 
 void ScreenEdgeTest::initTestCase()
 {
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -83,7 +83,7 @@ void ScreenEdgeTest::initTestCase()
     kwinApp()->setConfig(config);
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(Scripting::self());
 
     ScreenEdges::self()->setTimeThreshold(0);
diff --git a/autotests/integration/shade_test.cpp b/autotests/integration/shade_test.cpp
index 8491502096..f4f302f4a8 100644
--- a/autotests/integration/shade_test.cpp
+++ b/autotests/integration/shade_test.cpp
@@ -49,14 +49,14 @@ private Q_SLOTS:
 void ShadeTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/showing_desktop_test.cpp b/autotests/integration/showing_desktop_test.cpp
index 1ceb47cb09..2d9ab26dec 100644
--- a/autotests/integration/showing_desktop_test.cpp
+++ b/autotests/integration/showing_desktop_test.cpp
@@ -46,13 +46,13 @@ private Q_SLOTS:
 void ShowingDesktopTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/stacking_order_test.cpp b/autotests/integration/stacking_order_test.cpp
index 20d5a72d4a..c6265c7b1d 100644
--- a/autotests/integration/stacking_order_test.cpp
+++ b/autotests/integration/stacking_order_test.cpp
@@ -67,15 +67,15 @@ void StackingOrderTest::initTestCase()
     qRegisterMetaType<KWin::AbstractClient *>();
     qRegisterMetaType<KWin::Deleted *>();
 
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/struts_test.cpp b/autotests/integration/struts_test.cpp
index 3a9e26faf4..831eca1cd2 100644
--- a/autotests/integration/struts_test.cpp
+++ b/autotests/integration/struts_test.cpp
@@ -68,8 +68,8 @@ void StrutsTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Deleted*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
@@ -83,7 +83,7 @@ void StrutsTest::initTestCase()
     kwinApp()->setConfig(config);
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/tabbox_test.cpp b/autotests/integration/tabbox_test.cpp
index 651c193986..da96c9728c 100644
--- a/autotests/integration/tabbox_test.cpp
+++ b/autotests/integration/tabbox_test.cpp
@@ -53,8 +53,8 @@ private Q_SLOTS:
 void TabBoxTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -65,7 +65,7 @@ void TabBoxTest::initTestCase()
     qputenv("KWIN_XKB_DEFAULT_KEYMAP", "1");
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 }
 
diff --git a/autotests/integration/touch_input_test.cpp b/autotests/integration/touch_input_test.cpp
index a220515596..73239b8a5b 100644
--- a/autotests/integration/touch_input_test.cpp
+++ b/autotests/integration/touch_input_test.cpp
@@ -58,14 +58,14 @@ private:
 void TouchInputTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/transient_placement.cpp b/autotests/integration/transient_placement.cpp
index e45a280492..02f7df3341 100644
--- a/autotests/integration/transient_placement.cpp
+++ b/autotests/integration/transient_placement.cpp
@@ -63,14 +63,14 @@ private Q_SLOTS:
 void TransientPlacementTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/virtual_desktop_test.cpp b/autotests/integration/virtual_desktop_test.cpp
index 9e04c66511..535b0a527f 100644
--- a/autotests/integration/virtual_desktop_test.cpp
+++ b/autotests/integration/virtual_desktop_test.cpp
@@ -52,8 +52,8 @@ private Q_SLOTS:
 void VirtualDesktopTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
 
@@ -62,7 +62,7 @@ void VirtualDesktopTest::initTestCase()
     qputenv("XKB_DEFAULT_RULES", "evdev");
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     waylandServer()->initWorkspace();
 
     if (kwinApp()->x11Connection()) {
diff --git a/autotests/integration/window_rules_test.cpp b/autotests/integration/window_rules_test.cpp
index 3127a43b0a..40e3de69b5 100644
--- a/autotests/integration/window_rules_test.cpp
+++ b/autotests/integration/window_rules_test.cpp
@@ -53,14 +53,14 @@ void WindowRuleTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Deleted*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/window_selection_test.cpp b/autotests/integration/window_selection_test.cpp
index a818e57672..3bdfd6203d 100644
--- a/autotests/integration/window_selection_test.cpp
+++ b/autotests/integration/window_selection_test.cpp
@@ -64,15 +64,15 @@ private Q_SLOTS:
 void TestWindowSelection::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     qputenv("XKB_DEFAULT_RULES", "evdev");
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/x11_client_test.cpp b/autotests/integration/x11_client_test.cpp
index fbd5eb124c..010aaff246 100644
--- a/autotests/integration/x11_client_test.cpp
+++ b/autotests/integration/x11_client_test.cpp
@@ -67,14 +67,14 @@ void X11ClientTest::initTestCase()
 {
     qRegisterMetaType<KWin::Deleted*>();
     qRegisterMetaType<KWin::AbstractClient*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QVERIFY(KWin::Compositor::self());
     waylandServer()->initWorkspace();
 }
diff --git a/autotests/integration/xdgshellclient_rules_test.cpp b/autotests/integration/xdgshellclient_rules_test.cpp
index 2b143ae921..5b2e948b21 100644
--- a/autotests/integration/xdgshellclient_rules_test.cpp
+++ b/autotests/integration/xdgshellclient_rules_test.cpp
@@ -226,14 +226,14 @@ void TestXdgShellClientRules::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient *>();
 
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/xdgshellclient_test.cpp b/autotests/integration/xdgshellclient_test.cpp
index 7d9f3e2722..5241d2598e 100644
--- a/autotests/integration/xdgshellclient_test.cpp
+++ b/autotests/integration/xdgshellclient_test.cpp
@@ -126,14 +126,14 @@ void TestXdgShellClient::initTestCase()
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWayland::Client::Output*>();
 
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/xwayland_input_test.cpp b/autotests/integration/xwayland_input_test.cpp
index 1eb7a61d05..420cb1d4e3 100644
--- a/autotests/integration/xwayland_input_test.cpp
+++ b/autotests/integration/xwayland_input_test.cpp
@@ -53,14 +53,14 @@ void XWaylandInputTest::initTestCase()
 {
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Deleted*>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/autotests/integration/xwayland_selections_test.cpp b/autotests/integration/xwayland_selections_test.cpp
index 9753636522..8d7298dd4c 100644
--- a/autotests/integration/xwayland_selections_test.cpp
+++ b/autotests/integration/xwayland_selections_test.cpp
@@ -54,8 +54,8 @@ void XwaylandSelectionsTest::initTestCase()
     QSKIP("Skipped as it fails for unknown reasons on build.kde.org");
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<QProcess::ExitStatus>();
-    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
-    QVERIFY(workspaceCreatedSpy.isValid());
+    QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
+    QVERIFY(applicationStartedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
 //    QSignalSpy clipboardSyncDevicedCreated{waylandServer(), &WaylandServer::xclipboardSyncDataDeviceCreated};
 //    QVERIFY(clipboardSyncDevicedCreated.isValid());
@@ -63,7 +63,7 @@ void XwaylandSelectionsTest::initTestCase()
     QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
-    QVERIFY(workspaceCreatedSpy.wait());
+    QVERIFY(applicationStartedSpy.wait());
     QCOMPARE(screens()->count(), 2);
     QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
     QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
diff --git a/main.cpp b/main.cpp
index fcd0338032..41c0418f80 100644
--- a/main.cpp
+++ b/main.cpp
@@ -160,6 +160,11 @@ Application::~Application()
     destroyPlatform();
 }
 
+void Application::notifyStarted()
+{
+    emit started();
+}
+
 void Application::destroyAtoms()
 {
     delete atoms;
diff --git a/main.h b/main.h
index a1b10af5d5..bbd0a26117 100644
--- a/main.h
+++ b/main.h
@@ -194,12 +194,14 @@ Q_SIGNALS:
     void workspaceCreated();
     void screensCreated();
     void virtualTerminalCreated();
+    void started();
 
 protected:
     Application(OperationMode mode, int &argc, char **argv);
     virtual void performStartup() = 0;
 
     void notifyKSplash();
+    void notifyStarted();
     void createInput();
     void createWorkspace();
     void createAtoms();
diff --git a/main_wayland.cpp b/main_wayland.cpp
index ed7b7325d3..6f9415cdf1 100644
--- a/main_wayland.cpp
+++ b/main_wayland.cpp
@@ -192,6 +192,7 @@ void ApplicationWayland::finalizeStartup()
     }
     startSession();
     createWorkspace();
+    notifyStarted();
 }
 
 void ApplicationWayland::continueStartupWithScene()
diff --git a/main_x11.cpp b/main_x11.cpp
index 6474deb016..5897404563 100644
--- a/main_x11.cpp
+++ b/main_x11.cpp
@@ -249,6 +249,8 @@ void ApplicationX11::performStartup()
                 Xcb::sync(); // Trigger possible errors, there's still a chance to abort
 
                 notifyKSplash();
+
+                notifyStarted();
             }
         );
         connect(platform(), &Platform::initFailed, this,