Hi there.

I've got a problem with gdm. It doesn't come up anymore. I'm on 3.11.4+git. I have updated the other packages to 3.11.5+git, where applicable.

Here's what I see in the logs:

Feb 05 22:38:55 nachtschichtgeraet dbus-daemon[6156]: dbus[6156]: [system] Rejected send message, 1 matched rules; type="method_call", sender=":1.896" (uid=0 pid=19937 comm="/usr/sbin/gdm ") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.922" (uid=0 pid=20260 comm="/usr/libexec/gdm-simple-slave --display-id /org/gn")
Feb 05 22:38:55 nachtschichtgeraet dbus[6156]: [system] Rejected send message, 1 matched rules; type="method_call", sender=":1.896" (uid=0 pid=19937 comm="/usr/sbin/gdm ") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.922" (uid=0 pid=20260 comm="/usr/libexec/gdm-simple-slave --display-id /org/gn")
Feb 05 22:38:55 nachtschichtgeraet gdm[19937]: Failed to give slave programs access to the display. Trying to proceed.
Feb 05 22:38:56 nachtschichtgeraet systemd[1]: Starting Session c182 of user gdm.
Feb 05 22:38:56 nachtschichtgeraet systemd-logind[6153]: New session c182 of user gdm.
Feb 05 22:38:56 nachtschichtgeraet systemd-logind[6153]: Linked /tmp/.X11-unix/X5 to /run/user/105/X11-display.
Feb 05 22:38:56 nachtschichtgeraet systemd[1]: Started Session c182 of user gdm.
Feb 05 22:38:56 nachtschichtgeraet org.a11y.Bus[20287]: **
Feb 05 22:38:56 nachtschichtgeraet org.a11y.Bus[20287]: GLib-GIO:ERROR:/var/tmp/portage/dev-libs/glib-2.39.4/work/glib-2.39.4/gio/gdbusconnection.c:6921:message_bus_get_singleton: code should not be reached
Feb 05 22:38:56 nachtschichtgeraet /usr/bin/dbus-launch[20283]: ** (gnome-session-check-accelerated:20288): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.Spawn.ChildSignaled: Process org.a11y.Bus received signal 6
Feb 05 22:38:56 nachtschichtgeraet /usr/bin/dbus-launch[20283]: gnome-session[20283]: DEBUG(+): Enabling debugging
Feb 05 22:38:56 nachtschichtgeraet gnome-session[20283]: DEBUG(+): Enabling debugging
Feb 05 22:38:56 nachtschichtgeraet /usr/bin/dbus-launch[20283]: gnome-session[20283]: DEBUG(+): Using systemd for session tracking
Feb 05 22:38:56 nachtschichtgeraet gnome-session[20283]: DEBUG(+): Using systemd for session tracking
Feb 05 22:38:56 nachtschichtgeraet /usr/bin/dbus-launch[20283]: **
Feb 05 22:38:56 nachtschichtgeraet /usr/bin/dbus-launch[20283]: GLib-GIO:ERROR:/var/tmp/portage/dev-libs/glib-2.39.4/work/glib-2.39.4/gio/gdbusconnection.c:6921:message_bus_get_singleton: code should not be reached
Feb 05 22:38:56 nachtschichtgeraet /usr/bin/dbus-launch[20283]: gnome-session[20283]: DEBUG(+): GsmShell: Not connected to the shell
Feb 05 22:38:56 nachtschichtgeraet gdm[19937]: GLib: Source ID 85 was not found when attempting to remove it
Feb 05 22:38:56 nachtschichtgeraet gdm-Xorg-:5[20265]: (EE) Server terminated successfully (0). Closing log file.
Feb 05 22:38:56 nachtschichtgeraet gdm[19937]: GLib: Source ID 4 was not found when attempting to remove it
Feb 05 22:38:56 nachtschichtgeraet gdm[19937]: GLib-GObject: g_object_ref: assertion 'object->ref_count > 0' failed
Feb 05 22:38:56 nachtschichtgeraet gdm[19937]: GLib-GObject: g_object_unref: assertion 'object->ref_count > 0' failed
Feb 05 22:38:56 nachtschichtgeraet gdm[19937]: GdmDisplay: display lasted 0.920635 seconds
Feb 05 22:38:56 nachtschichtgeraet gdm[19937]: GdmLocalDisplayFactory: maximum number of X display failures reached: check X server log for errors
Feb 05 22:38:56 nachtschichtgeraet systemd-logind[6153]: Removed session c182.

This is an abridged log, I only copied what I deemed relevant. There's more about AccountsService, X and GdmSession, but these check out I think. The messages are repeated several times until a maximum number of attempts is reached.

I noticed that bug 722804 seems to be related, but maybe it's just a coincidence.

Best,
tscholak