diff --git a/abstract_egl_backend.cpp b/abstract_egl_backend.cpp
index edbd60bd48..82bec21a93 100644
--- a/abstract_egl_backend.cpp
+++ b/abstract_egl_backend.cpp
@@ -80,6 +80,11 @@ bool AbstractEglBackend::initEglAPI()
 {
     EGLint major, minor;
     if (eglInitialize(m_display, &major, &minor) == EGL_FALSE) {
+        qCWarning(KWIN_CORE) << "eglInitialize failed";
+        EGLint error = eglGetError();
+        if (error != EGL_SUCCESS) {
+            qCWarning(KWIN_CORE) << "Error during eglInitialize " << error;
+        }
         return false;
     }
     EGLint error = eglGetError();
diff --git a/plugins/platforms/drm/drm_buffer.cpp b/plugins/platforms/drm/drm_buffer.cpp
index cbcb46ff2d..0f1c7a41e5 100644
--- a/plugins/platforms/drm/drm_buffer.cpp
+++ b/plugins/platforms/drm/drm_buffer.cpp
@@ -24,6 +24,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 // system
 #include <sys/mman.h>
+#include <errno.h>
 // drm
 #include <xf86drm.h>
 #if HAVE_GBM
@@ -44,13 +45,16 @@ DrmBuffer::DrmBuffer(DrmBackend *backend, const QSize &size)
     createArgs.width = size.width();
     createArgs.height = size.height();
     if (drmIoctl(m_backend->fd(), DRM_IOCTL_MODE_CREATE_DUMB, &createArgs) != 0) {
+        qCWarning(KWIN_DRM) << "DRM_IOCTL_MODE_CREATE_DUMB failed";
         return;
     }
     m_handle = createArgs.handle;
     m_bufferSize = createArgs.size;
     m_stride = createArgs.pitch;
-    drmModeAddFB(m_backend->fd(), size.width(), size.height(), 24, 32,
-                 m_stride, createArgs.handle, &m_bufferId);
+    if (drmModeAddFB(m_backend->fd(), size.width(), size.height(), 24, 32,
+                     m_stride, createArgs.handle, &m_bufferId) != 0) {
+        qCWarning(KWIN_DRM) << "drmModeAddFB failed with errno" << errno;
+    }
 }
 
 
diff --git a/plugins/platforms/x11/common/eglonxbackend.cpp b/plugins/platforms/x11/common/eglonxbackend.cpp
index 323ba1b9fb..79b1f87ea4 100644
--- a/plugins/platforms/x11/common/eglonxbackend.cpp
+++ b/plugins/platforms/x11/common/eglonxbackend.cpp
@@ -179,8 +179,10 @@ bool EglOnXBackend::initRenderingContext()
     setHavePlatformBase(havePlatformBase);
     if (havePlatformBase) {
         // Make sure that the X11 platform is supported
-        if (!hasClientExtension(QByteArrayLiteral("EGL_EXT_platform_x11")))
+        if (!hasClientExtension(QByteArrayLiteral("EGL_EXT_platform_x11"))) {
+            qCWarning(KWIN_CORE) << "EGL_EXT_platform_base is supported, but EGL_EXT_platform_x11 is not. Cannot create EGLDisplay on X11";
             return false;
+        }
 
         const int attribs[] = {
             EGL_PLATFORM_X11_SCREEN_EXT, m_x11ScreenNumber,
@@ -192,8 +194,10 @@ bool EglOnXBackend::initRenderingContext()
         dpy = eglGetDisplay(m_x11Display);
     }
 
-    if (dpy == EGL_NO_DISPLAY)
+    if (dpy == EGL_NO_DISPLAY) {
+        qCWarning(KWIN_CORE) << "Failed to get the EGLDisplay";
         return false;
+    }
     setEglDisplay(dpy);
     initEglAPI();