David C. Partridge
2016-Jul-30 11:27 UTC
[LightDM] lightdm login failure on 2nd a subsequent login attempt.
After upgrade to 16.04.1 from 14.04 I'm getting problems with lightdm. Here's what I see in syslog after a first (successful) login [CODE] Jul 30 10:51:36 Charon lightdm[4444]: (lightdm:4444): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed Jul 30 10:51:36 Charon systemd[1]: Started Session c2 of user lightdm. Jul 30 10:51:36 Charon lightdm[4444]: (lightdm:4444): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed Jul 30 10:51:36 Charon systemd[1]: Started Session c2 of user lightdm. Jul 30 10:51:36 Charon lightdm[4444]: ** (lightdm:4444): WARNING **: Error activating login1 session: GDBus.Error:org.freedesktop.DBus.Error.NotSupported: Operation not supported Jul 30 10:51:36 Charon org.a11y.atspi.Registry[8379]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry Jul 30 10:51:37 Charon systemd[1]: Started Run anacron jobs. Jul 30 10:51:37 Charon anacron[8502]: Anacron 2.3 started on 2016-07-30 Jul 30 10:51:37 Charon anacron[8502]: Will run job `cron.daily' in 5 min. Jul 30 10:51:37 Charon anacron[8502]: Will run job `cron.monthly' in 15 min. Jul 30 10:51:37 Charon anacron[8502]: Jobs will be executed sequentially Jul 30 10:51:42 Charon org.gtk.vfs.Daemon[8370]: A connection to the bus can't be made Jul 30 10:51:42 Charon systemd[1]: Created slice User Slice of amonra. Jul 30 10:51:42 Charon systemd[1]: Started Session c3 of user amonra. Jul 30 10:51:42 Charon systemd[1]: Starting User Manager for UID 1000... Jul 30 10:51:42 Charon systemd[8649]: Reached target Paths. Jul 30 10:51:42 Charon systemd[8649]: Reached target Sockets. Jul 30 10:51:42 Charon systemd[8649]: Reached target Timers. Jul 30 10:51:42 Charon systemd[8649]: Reached target Basic System. Jul 30 10:51:42 Charon systemd[8649]: Reached target Default. Jul 30 10:51:42 Charon systemd[8649]: Startup finished in 85ms. Jul 30 10:51:42 Charon systemd[1]: Started User Manager for UID 1000. Jul 30 10:51:42 Charon lightdm[4444]: ** (lightdm:4444): WARNING **: Error activating login1 session: GDBus.Error:org.freedesktop.DBus.Error.NotSupported: Operation not supported Jul 30 10:51:43 Charon org.a11y.Bus[8721]: Activating service name='org.a11y.atspi.Registry' Jul 30 10:51:43 Charon org.a11y.Bus[8721]: ** (process:8819): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files [/CODE] If I logout and then attempt to reconnect, I get the greeter login prompt and when I press enter to login, the X session closes, and this is what I see in syslog [CODE] Jul 30 10:57:10 Charon anacron[8502]: Job `cron.daily' terminated Jul 30 11:00:25 Charon systemd[1]: Started CUPS Scheduler. Jul 30 11:02:01 Charon systemd[1]: Starting Cleanup of Temporary Directories... Jul 30 11:02:01 Charon systemd-tmpfiles[16744]: [/usr/lib/tmpfiles.d/var.conf:14] Duplicate line for path "/var/log", ignoring. Jul 30 11:02:01 Charon systemd[1]: Started Cleanup of Temporary Directories. Jul 30 11:03:32 Charon systemd[1]: Stopping Run anacron jobs... Jul 30 11:03:32 Charon systemd[1]: Stopped Run anacron jobs. Jul 30 11:04:05 Charon lightdm[4444]: (lightdm:4444): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed Jul 30 11:04:05 Charon systemd[1]: Started Session c4 of user lightdm. Jul 30 11:04:05 Charon lightdm[4444]: ** (lightdm:4444): WARNING **: Error activating login1 session: GDBus.Error:org.freedesktop.DBus.Error.NotSupported: Operation not supported Jul 30 11:04:06 Charon systemd[1]: Started Run anacron jobs. Jul 30 11:04:06 Charon anacron[18619]: Anacron 2.3 started on 2016-07-30 Jul 30 11:04:06 Charon anacron[18619]: Will run job `cron.monthly' in 15 min. Jul 30 11:04:06 Charon anacron[18619]: Jobs will be executed sequentially Jul 30 11:04:12 Charon systemd[1]: Started Session c5 of user amonra. Jul 30 11:04:12 Charon lightdm[4444]: ** (lightdm:4444): WARNING **: Error activating login1 session: GDBus.Error:org.freedesktop.DBus.Error.NotSupported: Operation not supported Jul 30 11:04:44 Charon systemd[1]: Stopping Run anacron jobs... Jul 30 11:04:44 Charon systemd[1]: Stopped Run anacron jobs. Jul 30 11:05:28 Charon systemd[1]: Started Run anacron jobs. Jul 30 11:05:28 Charon anacron[19872]: Anacron 2.3 started on 2016-07-30 Jul 30 11:05:28 Charon anacron[19872]: Will run job `cron.monthly' in 15 min. Jul 30 11:05:28 Charon anacron[19872]: Jobs will be executed sequentially Jul 30 11:06:15 Charon systemd[1]: Started Session 1 of user amonra. Jul 30 11:09:01 Charon CRON[22656]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -x /usr/lib/php5/sessionclean ] && [ -d /var/lib/php5 ] && /usr/lib/php5/sessionclean /var/lib/php5 $(/usr/lib/php5/maxlifetime)) [/CODE] I realise that's not much to go on, but the only thing I spot is the second log doesn't show the message: Started User Manager for UID 1000. looking in the /var/log/lightdm, I see File: /var/log/lightdm/seat0-greeter.log [CODE]* Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf ** (process:4451): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files Activating service name='org.a11y.atspi.Registry' Successfully activated service 'org.a11y.atspi.Registry' upstart: indicator-application main process (4499) killed by TERM signal upstart: indicator-application main process ended, respawning upstart: indicator-application main process (28768) killed by TERM signal upstart: indicator-application pre-stop process (28799) killed by HUP signal ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf ** (process:4301): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files Activating service name='org.a11y.atspi.Registry' Successfully activated service 'org.a11y.atspi.Registry' upstart: indicator-application main process (4350) killed by TERM signal ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf ** (process:4619): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files Activating service name='org.a11y.atspi.Registry' Successfully activated service 'org.a11y.atspi.Registry'[/CODE] File: /var/log/lightdm/(null)-greeter.log [CODE]** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf ** (process:4913): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files libGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast Activating service name='org.a11y.atspi.Registry' Successfully activated service 'org.a11y.atspi.Registry' upstart: indicator-application main process (4953) killed by TERM signal ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf Failed to launch bus: Failed to connect to session buslibGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast upstart: indicator-application main process ended, respawning upstart: indicator-application main process ended, respawning upstart: indicator-application respawning too fast, stopped /usr/lib/lightdm/lightdm-greeter-session: 23: kill: No such process ** (lightdm-gtk-greeter:26282): WARNING **: [PIDs] Failed to terminate process #26284: No such process ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf Failed to launch bus: Failed to connect to session buslibGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast upstart: indicator-application main process ended, respawning upstart: indicator-application main process ended, respawning upstart: indicator-application respawning too fast, stopped (lightdm-gtk-greeter:26464): Gdk-WARNING **: lightdm-gtk-greeter: Fatal IO error 11 (Resource temporarily unavailable) on X server 192.168.129.64:0. /usr/lib/lightdm/lightdm-greeter-session: 23: kill: No such process ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf Failed to launch bus: Failed to connect to session buslibGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast upstart: indicator-application main process ended, respawning upstart: indicator-application main process ended, respawning upstart: indicator-application respawning too fast, stopped /usr/lib/lightdm/lightdm-greeter-session: 23: kill: No such process ** (lightdm-gtk-greeter:26763): WARNING **: [PIDs] Failed to terminate process #26777: No such process ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf Failed to launch bus: Failed to connect to session buslibGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast upstart: indicator-application main process ended, respawning upstart: indicator-application main process ended, respawning upstart: indicator-application respawning too fast, stopped /usr/lib/lightdm/lightdm-greeter-session: 23: kill: No such process ** (lightdm-gtk-greeter:27283): WARNING **: [PIDs] Failed to terminate process #27285: No such process ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf Failed to launch bus: Failed to connect to session buslibGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast upstart: indicator-application main process ended, respawning upstart: indicator-application main process ended, respawning upstart: indicator-application respawning too fast, stopped (lightdm-gtk-greeter:28006): Gdk-WARNING **: lightdm-gtk-greeter: Fatal IO error 11 (Resource temporarily unavailable) on X server 192.168.129.64:0. /usr/lib/lightdm/lightdm-greeter-session: 23: kill: No such process ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf ** (process:4639): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files libGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast Activating service name='org.a11y.atspi.Registry' Successfully activated service 'org.a11y.atspi.Registry' upstart: indicator-application main process (4667) killed by TERM signal ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf Failed to launch bus: Failed to connect to session buslibGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast upstart: indicator-application main process ended, respawning upstart: indicator-application main process ended, respawning upstart: indicator-application respawning too fast, stopped /usr/lib/lightdm/lightdm-greeter-session: 23: kill: No such process ** (lightdm-gtk-greeter:11549): WARNING **: [PIDs] Failed to terminate process #11551: No such process ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf ** (process:8373): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files libGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast Activating service name='org.a11y.atspi.Registry' Successfully activated service 'org.a11y.atspi.Registry' upstart: indicator-application main process (8404) terminated with status 1 upstart: indicator-application main process ended, respawning ** (lightdm-gtk-greeter:8371): WARNING **: [PIDs] Failed to terminate process #8373: No such process upstart: indicator-application main process (8644) killed by TERM signal ** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31) ** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_lubuntu.conf Failed to launch bus: Failed to connect to session buslibGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast upstart: indicator-application main process ended, respawning upstart: indicator-application main process ended, respawning upstart: indicator-application respawning too fast, stopped /usr/lib/lightdm/lightdm-greeter-session: 23: kill: No such process ** (lightdm-gtk-greeter:18500): WARNING **: [PIDs] Failed to terminate process #18502: No such process [/CODE] File: /var/log/lightdm/lightdm.log [CODE] [+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log [+0.00s] DEBUG: Starting Light Display Manager 1.18.2, UID=0 PID=4444 [+0.00s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/20-lubuntu.conf [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-disable-log-backup.conf [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-greeter-wrapper.conf [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-guest-wrapper.conf [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-xserver-command.conf [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/60-lightdm-gtk-greeter.conf [+0.00s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d [+0.00s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d [+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf.d/20-lubuntu.conf [+0.00s] DEBUG: [SeatDefaults] is now called [Seat:*], please update this configuration [+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf [+0.00s] DEBUG: [SeatDefaults] is now called [Seat:*], please update this configuration [+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager [+0.00s] DEBUG: Registered seat module xlocal [+0.01s] DEBUG: Registered seat module xremote [+0.01s] DEBUG: Registered seat module unity [+0.04s] DEBUG: Monitoring logind for seats [+0.04s] DEBUG: New seat added from logind: seat0 [+0.04s] DEBUG: Seat seat0: Loading properties from config section Seat:* [+0.04s] DEBUG: Seat seat0: Starting [+0.04s] DEBUG: Seat seat0: Creating greeter session [+0.04s] DEBUG: Seat seat0: Creating display server of type x [+0.06s] DEBUG: Using VT 7 [+0.06s] DEBUG: Seat seat0: Starting local X display on VT 7 [+0.06s] DEBUG: DisplayServer x-0: Logging to /var/log/lightdm/x-0.log [+0.06s] DEBUG: DisplayServer x-0: Writing X server authority to /var/run/lightdm/root/:0 [+0.17s] DEBUG: DisplayServer x-0: Launching X Server [+0.17s] DEBUG: Launching process 4463: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -listen tcp vt7 -novtswitch [+0.17s] DEBUG: DisplayServer x-0: Waiting for ready signal from X server :0 [+0.17s] DEBUG: Acquired bus name org.freedesktop.DisplayManager [+0.18s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0 [+0.18s] DEBUG: Starting XDMCP server on UDP/IP port 177 [+0.20s] DEBUG: Loading users from org.freedesktop.Accounts [+0.20s] DEBUG: User /org/freedesktop/Accounts/User1000 added [+1.82s] DEBUG: Got signal 10 from process 4463 [+1.82s] DEBUG: DisplayServer x-0: Got signal from X server :0 [+1.82s] DEBUG: DisplayServer x-0: Connecting to XServer :0 [+1.84s] DEBUG: Seat seat0: Display server ready, starting session authentication [+1.84s] DEBUG: Session pid=4565: Started with service 'lightdm-greeter', username 'lightdm' [+1.99s] DEBUG: Session pid=4565: Authentication complete with return value 0: Success [+1.99s] DEBUG: Seat seat0: Session authenticated, running command [+1.99s] DEBUG: Session pid=4565: Running command /usr/lib/lightdm/lightdm-greeter-session /usr/sbin/lightdm-gtk-greeter [+1.99s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm [+1.99s] DEBUG: Session pid=4565: Logging to /var/log/lightdm/seat0-greeter.log [+2.52s] DEBUG: Activating VT 7 [+2.52s] DEBUG: Activating login1 session c1 [+2.55s] DEBUG: Seat seat0 changes active session to c1 [+2.55s] DEBUG: Session c1 is already active [+4.00s] DEBUG: Greeter connected version=1.18.2 resettable=false [+5.97s] DEBUG: Greeter start authentication for amonra [+5.97s] DEBUG: Session pid=4720: Started with service 'lightdm', username 'amonra' [+6.04s] DEBUG: Session pid=4720: Got 1 message(s) from PAM [+6.04s] DEBUG: Prompt greeter with 1 message(s) [+238.45s] DEBUG: Got Query(authentication_names=[]) from 192.168.129.64:61250 [+238.45s] DEBUG: Send Willing(authentication_name='' hostname='Charon' status='') to 192.168.129.64:61250 [+238.82s] DEBUG: Got Request(display_number=0 connections=[192.168.129.64] authentication_name='' authentication_dataauthorization_names=['MIT-MAGIC-COOKIE-1' 'XDM-AUTHORIZATION-1'] manufacturer_display_id='') from 192.168.129.64:61250 [+238.82s] CRITICAL: g_object_unref: assertion 'G_IS_OBJECT (object)' failed [+238.82s] DEBUG: Send Accept(session_id=6899 authentication_name='' authentication_data= authorization_name='MIT-MAGIC-COOKIE-1' authorization_data=F1E5579274A9CF3D1E6A91CD55EA7E12) to 192.168.129.64:61250 [+238.82s] DEBUG: Got Manage(session_id=6899 display_number=0 display_class='MIT-unspecified') from 192.168.129.64:61250 [+238.82s] DEBUG: Seat (null): Loading properties from config section Seat:* [+238.82s] DEBUG: Seat (null): Starting [+238.82s] DEBUG: Seat (null): Creating greeter session [+238.82s] DEBUG: Seat (null): Creating display server of type x [+238.82s] DEBUG: DisplayServer x-192.168.129.64-0: Connecting to XServer 192.168.129.64:0 [+238.83s] DEBUG: Seat (null): Display server ready, starting session authentication [+238.83s] DEBUG: Session: Not setting XDG_VTNR [+238.83s] DEBUG: Session pid=8362: Started with service 'lightdm-greeter', username 'lightdm' [+238.84s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat1 [+238.87s] DEBUG: Session pid=8362: Authentication complete with return value 0: Success [+238.87s] DEBUG: Seat (null): Session authenticated, running command [+238.87s] DEBUG: Session pid=8362: Not setting XDG_VTNR [+238.87s] DEBUG: Session pid=8362: Running command /usr/lib/lightdm/lightdm-greeter-session /usr/sbin/lightdm-gtk-greeter [+238.87s] DEBUG: Session pid=8362: Logging to /var/log/lightdm/(null)-greeter.log [+238.90s] DEBUG: Activating login1 session c2 [+238.91s] WARNING: Error activating login1 session: GDBus.Error:org.freedesktop.DBus.Error.NotSupported: Operation not supported [+239.61s] DEBUG: Greeter connected version=1.18.2 resettable=false [+240.41s] DEBUG: Greeter start authentication for amonra [+240.41s] DEBUG: Session: Not setting XDG_VTNR [+240.41s] DEBUG: Session pid=8562: Started with service 'lightdm', username 'amonra' [+240.44s] DEBUG: Session pid=8562: Got 1 message(s) from PAM [+240.44s] DEBUG: Prompt greeter with 1 message(s) [+244.44s] DEBUG: Continue authentication [+244.48s] DEBUG: Session pid=8562: Authentication complete with return value 0: Success [+244.48s] DEBUG: Authenticate result for user amonra: Success [+244.48s] DEBUG: User amonra authorized [+244.50s] DEBUG: Greeter sets language en_GB [+244.80s] DEBUG: Greeter requests session Lubuntu [+244.80s] DEBUG: Seat (null): Stopping greeter; display server will be re-used for user session [+244.80s] DEBUG: Session pid=8362: Sending SIGTERM [+244.83s] DEBUG: Session pid=8362: Exited with return value 0 [+244.83s] DEBUG: Seat (null): Session stopped [+244.83s] DEBUG: Seat (null): Greeter stopped, running session [+244.83s] DEBUG: Registering session with bus path /org/freedesktop/DisplayManager/Session0 [+244.85s] DEBUG: Session pid=8562: Not setting XDG_VTNR [+244.86s] DEBUG: Session pid=8562: Running command /usr/sbin/lightdm-session /usr/bin/lxsession -s Lubuntu -e LXDE [+244.86s] DEBUG: Session pid=8562: Logging to .xsession-errors [+245.05s] DEBUG: Activating login1 session c3 [+245.05s] WARNING: Error activating login1 session: GDBus.Error:org.freedesktop.DBus.Error.NotSupported: Operation not supported [+923.66s] DEBUG: Session pid=8562: Exited with return value 0 [+923.66s] DEBUG: Seat (null): Session stopped [+923.66s] DEBUG: Seat (null): Stopping display server, no sessions require it [+923.66s] DEBUG: Seat (null): Display server stopped [+923.66s] DEBUG: Seat (null): Active display server stopped, starting greeter [+923.66s] DEBUG: Seat (null): Stopping; failed to start a greeter [+923.66s] DEBUG: Seat (null): Stopping [+923.66s] DEBUG: Seat (null): Stopped [+987.94s] DEBUG: Got Query(authentication_names=[]) from 192.168.129.64:64466 [+987.94s] DEBUG: Send Willing(authentication_name='' hostname='Charon' status='') to 192.168.129.64:64466 [+988.16s] DEBUG: Got Request(display_number=0 connections=[192.168.129.64] authentication_name='' authentication_dataauthorization_names=['MIT-MAGIC-COOKIE-1' 'XDM-AUTHORIZATION-1'] manufacturer_display_id='') from 192.168.129.64:64466 [+988.16s] CRITICAL: g_object_unref: assertion 'G_IS_OBJECT (object)' failed [+988.16s] DEBUG: Send Accept(session_id=24477 authentication_name='' authentication_data= authorization_name='MIT-MAGIC-COOKIE-1' authorization_data=3781F5E0763ABC87842DCC5C69507DB0) to 192.168.129.64:64466 [+988.16s] DEBUG: Got Manage(session_id=24477 display_number=0 display_class='MIT-unspecified') from 192.168.129.64:64466 [+988.16s] DEBUG: Seat (null): Loading properties from config section Seat:* [+988.16s] DEBUG: Seat (null): Starting [+988.16s] DEBUG: Seat (null): Creating greeter session [+988.16s] DEBUG: Seat (null): Creating display server of type x [+988.16s] DEBUG: DisplayServer x-192.168.129.64-0: Connecting to XServer 192.168.129.64:0 [+988.17s] DEBUG: Seat (null): Display server ready, starting session authentication [+988.17s] DEBUG: Session: Not setting XDG_VTNR [+988.17s] DEBUG: Session pid=18491: Started with service 'lightdm-greeter', username 'lightdm' [+988.17s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat2 [+988.21s] DEBUG: Session pid=18491: Authentication complete with return value 0: Success [+988.21s] DEBUG: Seat (null): Session authenticated, running command [+988.21s] DEBUG: Session pid=18491: Not setting XDG_VTNR [+988.21s] DEBUG: Session pid=18491: Running command /usr/lib/lightdm/lightdm-greeter-session /usr/sbin/lightdm-gtk-greeter [+988.21s] DEBUG: Session pid=18491: Logging to /var/log/lightdm/(null)-greeter.log [+988.24s] DEBUG: Activating login1 session c4 [+988.24s] WARNING: Error activating login1 session: GDBus.Error:org.freedesktop.DBus.Error.NotSupported: Operation not supported [+988.66s] DEBUG: Greeter connected version=1.18.2 resettable=false [+989.49s] DEBUG: Greeter start authentication for amonra [+989.49s] DEBUG: Session: Not setting XDG_VTNR [+989.49s] DEBUG: Session pid=18680: Started with service 'lightdm', username 'amonra' [+989.51s] DEBUG: Session pid=18680: Got 1 message(s) from PAM [+989.51s] DEBUG: Prompt greeter with 1 message(s) [+994.85s] DEBUG: Continue authentication [+994.92s] DEBUG: Session pid=18680: Authentication complete with return value 0: Success [+994.92s] DEBUG: Authenticate result for user amonra: Success [+994.92s] DEBUG: User amonra authorized [+994.93s] DEBUG: Greeter sets language en_GB [+995.23s] DEBUG: Greeter requests session Lubuntu [+995.23s] DEBUG: Seat (null): Stopping greeter; display server will be re-used for user session [+995.23s] DEBUG: Session pid=18491: Sending SIGTERM [+995.24s] DEBUG: Greeter closed communication channel [+995.25s] DEBUG: Session pid=18491: Exited with return value 0 [+995.25s] DEBUG: Seat (null): Session stopped [+995.25s] DEBUG: Seat (null): Greeter stopped, running session [+995.25s] DEBUG: Registering session with bus path /org/freedesktop/DisplayManager/Session1 [+995.26s] DEBUG: Session pid=18680: Not setting XDG_VTNR [+995.26s] DEBUG: Session pid=18680: Running command /usr/sbin/lightdm-session /usr/bin/lxsession -s Lubuntu -e LXDE [+995.26s] DEBUG: Session pid=18680: Logging to .xsession-errors [+995.29s] DEBUG: Activating login1 session c5 [+995.30s] WARNING: Error activating login1 session: GDBus.Error:org.freedesktop.DBus.Error.NotSupported: Operation not supported [+1505.74s] DEBUG: Session pid=18680: Exited with return value 0 [+1505.74s] DEBUG: Seat (null): Session stopped [+1505.74s] DEBUG: Seat (null): Stopping display server, no sessions require it [+1505.74s] DEBUG: Seat (null): Display server stopped [+1505.74s] DEBUG: Seat (null): Active display server stopped, starting greeter [+1505.74s] DEBUG: Seat (null): Stopping; failed to start a greeter [+1505.74s] DEBUG: Seat (null): Stopping [+1505.74s] DEBUG: Seat (null): Stopped [/CODE] Thanks Dave