diff -up mutter-3.26.0/src/backends/native/meta-launcher.c.hybrid mutter-3.26.0/src/backends/native/meta-launcher.c
--- mutter-3.26.0/src/backends/native/meta-launcher.c.hybrid	2017-09-18 15:55:56.673262947 +0100
+++ mutter-3.26.0/src/backends/native/meta-launcher.c	2017-09-18 15:56:21.383167768 +0100
@@ -363,7 +363,7 @@ get_primary_gpu_path (const gchar *seat_
       guint num_devices;
 
       num_devices = count_devices_with_connectors (seat_name, devices);
-      if (num_devices != 1)
+      if (num_devices > 1)
         goto out;
     }