/var/log/lightdm/lightdm.log is full of stuff like this.... in particular:
[+8758.58s] DEBUG: Greeter start authentication for guest account [+8759.00s] DEBUG: Session 19998 exited with return value 0 [+8759.00s] DEBUG: Greeter quit ------------------------------------------------------------------------------------------------------------------------------------------------- [+8757.20s] DEBUG: Greeter authorized [+8757.20s] DEBUG: Logging to /var/log/lightdm/x-0-greeter.log [+8757.20s] DEBUG: Session 19998 running command /usr/lib/lightdm/lightdm-greeter-session /usr/sbin/unity-greeter [+8757.43s] DEBUG: Greeter connected version=1.1.9 [+8757.43s] DEBUG: Greeter connected, display is ready [+8757.43s] DEBUG: New display ready, switching to it [+8757.43s] DEBUG: Activating VT 7 [+8757.43s] DEBUG: Stopping greeter display being switched from [+8758.58s] DEBUG: Greeter start authentication for guest account [+8759.00s] DEBUG: Session 19998 exited with return value 0 [+8759.00s] DEBUG: Greeter quit [+8759.00s] DEBUG: Failed to start greeter [+8759.00s] DEBUG: Stopping display [+8759.00s] DEBUG: Sending signal 15 to process 19994 [+8759.04s] DEBUG: Greeter closed communication channel [+8759.62s] DEBUG: Process 19994 exited with return value 0 [+8759.62s] DEBUG: X server stopped [+8759.62s] DEBUG: Removing X server authority /var/run/lightdm/root/:0 [+8759.62s] DEBUG: Releasing VT 7 [+8759.62s] DEBUG: Display server stopped [+8759.62s] DEBUG: Display stopped [+8759.62s] DEBUG: Active display stopped, switching to greeter [+8759.62s] DEBUG: Switching to greeter [+8759.62s] DEBUG: Starting new display for greeter [+8759.62s] DEBUG: Starting local X display [+8759.62s] DEBUG: Using VT 7 [+8759.62s] DEBUG: Logging to /var/log/lightdm/x-0.log [+8759.62s] DEBUG: Writing X server authority to /var/run/lightdm/root/:0 [+8759.62s] DEBUG: Launching X Server [+8759.62s] DEBUG: Launching process 20111: /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch [+8759.62s] DEBUG: Waiting for ready signal from X server :0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/971437 Title: lightdm crash/loop after recent 12.04 beta updates To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/971437/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
