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 Touch seeded packages, which is subscribed to lightdm in 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. Status in lightdm package in Ubuntu: Invalid Status in xfce4-session package in Ubuntu: Invalid Bug description: I cannot log out, shut down or restart from an activated temporary guest session. Only via tty or REISUB. Clicking anything in the logout/restart/shutdown GUI dialog window will only result in the message "An error occurred while logging out" GDBus.Error:org.freedesktop.Dbus.Error.InvalidArgs: Type ofmessage, "(yb)", does not match expected type "(b)" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1921920/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp