Index: uspace/srv/hid/compositor/compositor.c
===================================================================
--- uspace/srv/hid/compositor/compositor.c	(revision 870f78cb5edbf47ff1c7b5d88fdcddd374690118)
+++ uspace/srv/hid/compositor/compositor.c	(revision f9f45e7ade54ca0d1a7465c54d5baeb53951c48b)
@@ -2157,4 +2157,7 @@
 	}
 	fibril_mutex_unlock(&viewport_list_mtx);
+	
+	/* TODO damage only newly added viewports */
+	comp_damage(0, 0, UINT32_MAX, UINT32_MAX);
 	return EOK;
 }