Index: gdm-3.29.90/daemon/gdm-display.c
===================================================================
--- gdm-3.29.90.orig/daemon/gdm-display.c	2018-08-03 16:20:47.000000000 +0200
+++ gdm-3.29.90/daemon/gdm-display.c	2018-08-04 00:31:42.919646968 +0200
@@ -706,7 +706,7 @@ gdm_display_unmanage (GdmDisplay *self)
         }
 
         elapsed = g_timer_elapsed (self->priv->server_timer, NULL);
-        if (elapsed < 3) {
+        if (elapsed < 10) {
                 g_warning ("GdmDisplay: display lasted %lf seconds", elapsed);
                 _gdm_display_set_status (self, GDM_DISPLAY_FAILED);
         } else {