diff -u gdm-2.29.1/debian/gdm.upstart gdm-2.29.1/debian/gdm.upstart
--- gdm-2.29.1/debian/gdm.upstart
+++ gdm-2.29.1/debian/gdm.upstart
@@ -16,7 +16,7 @@
 env XORGCONFIG=/etc/X11/xorg.conf
 
 script
-    [ ! -f /etc/X11/default-display-manager -o "$(cat /etc/X11/default-display-manager 2>/dev/null)" = "/usr/sbin/gdm" ]
+    [ ! -f /etc/X11/default-display-manager -o "$(cat /etc/X11/default-display-manager 2>/dev/null)" = "/usr/sbin/gdm" ] || { stop; exit 0; }
 
     # Check kernel command-line for inhibitors
     for ARG in $(cat /proc/cmdline)
diff -u gdm-2.29.1/debian/changelog gdm-2.29.1/debian/changelog
--- gdm-2.29.1/debian/changelog
+++ gdm-2.29.1/debian/changelog
@@ -1,3 +1,10 @@
+gdm (2.29.1-0ubuntu3) lucid; urgency=low
+
+  * debian/gdm.upstart: Do not fail with exit status !=0 on startup 
+    when disabled. LP: #491483
+
+ -- Philip Muskovac <yofel@gmx.net>  Mon, 07 Dec 2009 16:40:43 +0100
+
 gdm (2.29.1-0ubuntu2) lucid; urgency=low
 
   * debian/patches/26_no_debug.patch: