Xubuntu 20.04 is EOL as of April 29, 2023. I'm closing this bug out. If you are still experiencing issues with a supported Xubuntu release[1], please feel free to reopen it or create a new bug report. Thanks!
[1] https://xubuntu.org/releases/ ** Changed in: lightdm (Ubuntu) Status: New => Invalid ** Changed in: xfce4-session (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1921920 Title: Xubuntu 20.04.2.1 cannot log out, shut down or restart from a temporary guest session. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1921920/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs