diff --git a/plugins/platforms/virtual/virtual_output.cpp b/plugins/platforms/virtual/virtual_output.cpp
--- a/plugins/platforms/virtual/virtual_output.cpp
+++ b/plugins/platforms/virtual/virtual_output.cpp
@@ -42,6 +42,7 @@
 void VirtualOutput::setGeometry(const QRect &geo)
 {
     m_pixelSize = geo.size();
+    setRawPhysicalSize(m_pixelSize);
     setGlobalPos(geo.topLeft());
 }