diff --git a/plugins/platforms/x11/standalone/x11_output.cpp b/plugins/platforms/x11/standalone/x11_output.cpp
index d86aa1bb79..41b35379e8 100644
--- a/plugins/platforms/x11/standalone/x11_output.cpp
+++ b/plugins/platforms/x11/standalone/x11_output.cpp
@@ -88,4 +88,14 @@ void X11Output::setGammaRampSize(int size)
     m_gammaRampSize = size;
 }
 
+QSize X11Output::physicalSize() const
+{
+    return m_physicalSize;
+}
+
+void X11Output::setPhysicalSize(const QSize &size)
+{
+    m_physicalSize = size;
+}
+
 }
diff --git a/plugins/platforms/x11/standalone/x11_output.h b/plugins/platforms/x11/standalone/x11_output.h
index ce622d5b63..ea890e42d7 100644
--- a/plugins/platforms/x11/standalone/x11_output.h
+++ b/plugins/platforms/x11/standalone/x11_output.h
@@ -54,6 +54,9 @@ public:
     int gammaRampSize() const override;
     bool setGammaRamp(const GammaRamp &gamma) override;
 
+    QSize physicalSize() const override;
+    void setPhysicalSize(const QSize &size);
+
 private:
     void setCrtc(xcb_randr_crtc_t crtc);
     void setGammaRampSize(int size);
@@ -61,6 +64,7 @@ private:
     xcb_randr_crtc_t m_crtc = XCB_NONE;
     QString m_name;
     QRect m_geometry;
+    QSize m_physicalSize;
     int m_gammaRampSize;
     int m_refreshRate;
 
diff --git a/plugins/platforms/x11/standalone/x11_platform.cpp b/plugins/platforms/x11/standalone/x11_platform.cpp
index ea3d08759e..7defdd7d2d 100644
--- a/plugins/platforms/x11/standalone/x11_platform.cpp
+++ b/plugins/platforms/x11/standalone/x11_platform.cpp
@@ -506,15 +506,29 @@ void X11StandalonePlatform::doUpdateOutputs()
             o->setGeometry(geo);
             o->setRefreshRate(refreshRate * 1000);
 
-            QString name;
             for (int j = 0; j < info->num_outputs; ++j) {
                 Xcb::RandR::OutputInfo outputInfo(outputInfos.at(j));
-                if (crtc == outputInfo->crtc) {
-                    name = outputInfo.name();
+                if (outputInfo->crtc != crtc) {
+                    continue;
+                }
+                QSize physicalSize(outputInfo->mm_width, outputInfo->mm_height);
+                switch (info->rotation) {
+                case XCB_RANDR_ROTATION_ROTATE_0:
+                case XCB_RANDR_ROTATION_ROTATE_180:
+                    break;
+                case XCB_RANDR_ROTATION_ROTATE_90:
+                case XCB_RANDR_ROTATION_ROTATE_270:
+                    physicalSize.transpose();
+                    break;
+                case XCB_RANDR_ROTATION_REFLECT_X:
+                case XCB_RANDR_ROTATION_REFLECT_Y:
                     break;
                 }
+                o->setName(outputInfo.name());
+                o->setPhysicalSize(physicalSize);
+                break;
             }
-            o->setName(name);
+
             m_outputs << o;
         }
     }