1 files changed, 12 insertions, 0 deletions
diff --git a/src/display.c b/src/display.c
index e0a9af3e..3cd9065a 100644
--- a/src/display.c
+++ b/src/display.c
@@ -196,6 +196,18 @@ enable_compositor (MetaDisplay *display,
 {
   GSList *list;
 
+  if (!META_DISPLAY_HAS_COMPOSITE (display) ||
+      !META_DISPLAY_HAS_DAMAGE (display) ||
+      !META_DISPLAY_HAS_XFIXES (display) ||
+      !META_DISPLAY_HAS_RENDER (display))
+    {
+      meta_warning (_("Missing %s extension required for compositing"),
+                    !META_DISPLAY_HAS_COMPOSITE (display) ? "composite" :
+                    !META_DISPLAY_HAS_DAMAGE (display) ? "damage" :
+                    !META_DISPLAY_HAS_XFIXES (display) ? "xfixes" : "render");
+      return;
+    }
+
   if (!display->compositor)
       display->compositor = meta_compositor_new (display);