diff --git a/plugins/platforms/drm/drm_object.h b/plugins/platforms/drm/drm_object.h
--- a/plugins/platforms/drm/drm_object.h
+++ b/plugins/platforms/drm/drm_object.h
@@ -149,3 +149,4 @@
 
 }
 
+QDebug& operator<<(QDebug& stream, const KWin::DrmObject*);
diff --git a/plugins/platforms/drm/drm_object.cpp b/plugins/platforms/drm/drm_object.cpp
--- a/plugins/platforms/drm/drm_object.cpp
+++ b/plugins/platforms/drm/drm_object.cpp
@@ -184,3 +184,8 @@
 }
 
 }
+
+QDebug& operator<<(QDebug& s, const KWin::DrmObject* obj)
+{
+    return s.nospace() << "DrmObject(" << obj->id() << ", output:" << obj->output() << ", fd: "<< obj->fd() << ')';
+}