[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Starting Light Display Manager 1.14.0, UID=0 PID=3395
[+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/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-ubuntu.conf
[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-unity-greeter.conf
[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-xserver-command.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
[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.00s] DEBUG: Registered seat module xlocal
[+0.00s] DEBUG: Registered seat module xremote
[+0.00s] DEBUG: Registered seat module unity
[+0.01s] DEBUG: Monitoring logind for seats
[+0.01s] DEBUG: New seat added from logind: seat0
[+0.01s] DEBUG: Loading properties from config section SeatDefaults
[+0.01s] DEBUG: Seat seat0: Starting
[+0.01s] DEBUG: Seat seat0: Creating user session
[+0.02s] DEBUG: Loading users from org.freedesktop.Accounts
[+0.02s] DEBUG: Seat seat0: Creating display server of type x
[+0.02s] DEBUG: Using VT 7
[+0.02s] DEBUG: Seat seat0: Starting local X display on VT 7
[+0.02s] DEBUG: DisplayServer x-0: Logging to /var/log/lightdm/x-0.log
[+0.02s] DEBUG: DisplayServer x-0: Writing X server authority to /var/run/lightdm/root/:0
[+0.02s] DEBUG: DisplayServer x-0: Launching X Server
[+0.02s] DEBUG: Launching process 3400: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+0.02s] DEBUG: DisplayServer x-0: Waiting for ready signal from X server :0
[+0.02s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+0.03s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0
[+0.13s] DEBUG: Seat seat0 changes active session to c1
[+0.13s] CRITICAL: session_get_login1_session_id: assertion 'session != NULL' failed
[+3.23s] DEBUG: Process 3400 terminated with signal 6
[+3.23s] DEBUG: DisplayServer x-0: X server stopped
[+3.23s] DEBUG: Releasing VT 7
[+3.23s] DEBUG: DisplayServer x-0: Removing X server authority /var/run/lightdm/root/:0
[+3.23s] DEBUG: Seat seat0: Display server stopped
[+3.23s] DEBUG: Seat seat0: Stopping session
[+3.23s] DEBUG: Seat seat0: Session stopped
[+3.23s] DEBUG: Seat seat0: Stopping display server, no sessions require it
[+3.23s] DEBUG: Seat seat0: Active display server stopped, starting greeter
[+3.23s] DEBUG: Seat seat0: Creating greeter session
[+3.24s] DEBUG: Seat seat0: Creating display server of type x
[+3.24s] DEBUG: Using VT 7
[+3.24s] DEBUG: Seat seat0: Starting local X display on VT 7
[+3.24s] DEBUG: DisplayServer x-0: Logging to /var/log/lightdm/x-0.log
[+3.24s] DEBUG: DisplayServer x-0: Writing X server authority to /var/run/lightdm/root/:0
[+3.24s] DEBUG: DisplayServer x-0: Launching X Server
[+3.24s] DEBUG: Launching process 3406: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+3.24s] DEBUG: DisplayServer x-0: Waiting for ready signal from X server :0
[+3.80s] DEBUG: Process 3406 terminated with signal 6
[+3.80s] DEBUG: DisplayServer x-0: X server stopped
[+3.80s] DEBUG: Releasing VT 7
[+3.80s] DEBUG: DisplayServer x-0: Removing X server authority /var/run/lightdm/root/:0
[+3.81s] DEBUG: Seat seat0: Display server stopped
[+3.81s] DEBUG: Seat seat0: Stopping; greeter display server failed to start
[+3.81s] DEBUG: Seat seat0: Stopping
[+3.81s] DEBUG: Seat seat0: Stopping session
[+3.81s] DEBUG: Seat seat0: Session stopped
[+3.81s] DEBUG: Seat seat0: Stopped
[+3.81s] DEBUG: Required seat has stopped
[+3.81s] DEBUG: Stopping display manager
[+3.81s] DEBUG: Display manager stopped
[+3.81s] DEBUG: Stopping daemon
[+3.81s] DEBUG: Seat seat0: Stopping session
[+3.81s] DEBUG: Exiting with return value 1