Here is the output from 'journalctl'. I think it shows X11 taking a SIGABRT (signal 6) but I cannot find any X11 log files in /var/log . My next tack will be to try installing a new version of ubuntu 20.04 .
** Attachment added: "Output of 'journalctl' on the affected virtual machine" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1864644/+attachment/5330866/+files/jc.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1864644 Title: I get logged out immediately after login to an X session To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1864644/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs