[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Starting Light Display Manager 1.24.0, UID=0 PID=780
[+0.00s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d
[+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
[+0.00s] DEBUG: Registered seat module local
[+0.00s] DEBUG: Registered seat module xremote
[+0.00s] DEBUG: Registered seat module unity
[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.00s] DEBUG: Monitoring logind for seats
[+0.00s] DEBUG: New seat added from logind: seat0
[+0.00s] DEBUG: Seat seat0: Loading properties from config section Seat:*
[+0.00s] DEBUG: Seat seat0: Starting
[+0.00s] DEBUG: Seat seat0: Creating greeter session
[+0.00s] DEBUG: Seat seat0: Creating display server of type x
[+0.01s] DEBUG: Could not run plymouth --ping: Failed to execute child process “plymouth” (No such file or directory)
[+0.01s] DEBUG: Using VT 7
[+0.01s] DEBUG: Seat seat0: Starting local X display on VT 7
[+0.01s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
[+0.01s] DEBUG: XServer 0: Writing X server authority to /run/lightdm/root/:0
[+0.01s] DEBUG: XServer 0: Launching X Server
[+0.01s] DEBUG: Launching process 786: /usr/bin/X :0 -seat seat0 -auth /run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+0.01s] DEBUG: XServer 0: Waiting for ready signal from X server :0
[+0.01s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+0.01s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0
[+0.01s] DEBUG: Loading users from org.freedesktop.Accounts
[+0.01s] DEBUG: User /org/freedesktop/Accounts/User1000 added
[+0.82s] DEBUG: Got signal 10 from process 786
[+0.82s] DEBUG: XServer 0: Got signal from X server :0
[+0.82s] DEBUG: XServer 0: Connecting to XServer :0
[+0.83s] CRITICAL: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
[+0.83s] DEBUG: Seat seat0: Display server ready, starting session authentication
[+0.83s] DEBUG: Session pid=797: Started with service 'lightdm-greeter', username 'lightdm'
[+0.84s] DEBUG: Session pid=797: Authentication complete with return value 0: Success
[+0.84s] DEBUG: Seat seat0: Session authenticated, running command
[+0.84s] DEBUG: Session pid=797: Running command /usr/bin/lightdm-gtk-greeter
[+0.84s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm
[+0.84s] DEBUG: Session pid=797: Logging to /var/log/lightdm/seat0-greeter.log
[+0.88s] DEBUG: Activating VT 7
[+0.88s] DEBUG: Activating login1 session c5
[+0.88s] DEBUG: Seat seat0 changes active session to c5
[+0.88s] DEBUG: Session c5 is already active
[+0.88s] DEBUG: Greeter closed communication channel
[+0.88s] DEBUG: Session pid=797: Exited with return value 1
[+0.88s] DEBUG: Seat seat0: Session stopped
[+0.88s] DEBUG: Seat seat0: Stopping; failed to start a greeter
[+0.88s] DEBUG: Seat seat0: Stopping
[+0.88s] DEBUG: Seat seat0: Stopping display server
[+0.88s] DEBUG: Sending signal 15 to process 786
[+0.89s] DEBUG: Seat seat0 changes active session to 
[+1.23s] DEBUG: Process 786 exited with return value 0
[+1.23s] DEBUG: XServer 0: X server stopped
[+1.23s] DEBUG: Releasing VT 7
[+1.23s] DEBUG: XServer 0: Removing X server authority /run/lightdm/root/:0
[+1.23s] DEBUG: Seat seat0: Display server stopped
[+1.23s] DEBUG: Seat seat0: Stopped
[+1.23s] DEBUG: Required seat has stopped
[+1.23s] DEBUG: Stopping display manager
[+1.23s] DEBUG: Display manager stopped
[+1.23s] DEBUG: Stopping daemon
[+1.23s] DEBUG: Exiting with return value 1