diff --git a/plugins/qpa/screen.h b/plugins/qpa/screen.h
--- a/plugins/qpa/screen.h
+++ b/plugins/qpa/screen.h
@@ -49,6 +49,7 @@
     QSizeF physicalSize() const override;
     QPlatformCursor *cursor() const override;
     QDpi logicalDpi() const override;
+    qreal devicePixelRatio() const override;
 
 private:
     QPointer<KWayland::Client::Output> m_output;
diff --git a/plugins/qpa/screen.cpp b/plugins/qpa/screen.cpp
--- a/plugins/qpa/screen.cpp
+++ b/plugins/qpa/screen.cpp
@@ -50,7 +50,7 @@
 
 QRect Screen::geometry() const
 {
-    return m_output ? m_output->geometry() : QRect(0, 0, 1, 1);
+    return m_output ? QRect(m_output->globalPosition(), m_output->pixelSize() / m_output->scale()) : QRect(0, 0, 1, 1);
 }
 
 QSizeF Screen::physicalSize() const
@@ -73,5 +73,10 @@
     return QPlatformScreen::logicalDpi();
 }
 
+qreal Screen::devicePixelRatio() const
+{
+    return m_output ? (qreal)m_output->scale() : 1.0;
+}
+
 }
 }