Tested with Ubuntu MATE, and the guest session works fine there, so the issue is probably not caused by lightdm. Possibly the Xubuntu specific parts of lightdm-gtk-greeter should be looked at.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627310 Title: Guest session fails to log out To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1627310/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs