The relevant lines fromt the LightdmLog.txt file which is attached above are:
[+135.46s] DEBUG: Closing guest account guest-2kgkn2 with command '/usr/sbin/guest-account remove guest-2kgkn2' [+135.67s] DEBUG: Guest account cleanup script returns 2048 [+135.87s] DEBUG: Seat seat0 changes active session to [+135.87s] CRITICAL: session_get_login1_session_id: assertion 'session != NULL' failed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1559513 Title: passwd and group entries are not removed on logout from a guest session Edit To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1559513/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
