The messages Daniel found in comment #4 indicate a systemd issue that I fixed upstream a few months ago. I'm sorry, I thought we already had the fix in Ubuntu but it seems we don't - it's in v245.
We need the commits 625077264ba01a108386eeea733ee244e6b7ff14 867af7282b2eccab53727714172b1081532ca8de (actually this is optional) d5016c21d7bb60f38aa461887cd843fabbc986ca 3a827125e70aa2cabbb97334f75576229efd6868 (also optional but we should take it) to fix this issue. You can read the upstream issue: https://github.com/systemd/systemd/issues/14322 for more information. ** Changed in: xserver-xorg-video-qxl (Ubuntu) Status: New => Invalid ** Bug watch added: github.com/systemd/systemd/issues #14322 https://github.com/systemd/systemd/issues/14322 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-qxl in Ubuntu. https://bugs.launchpad.net/bugs/1864644 Title: I get logged out immediately after login to an X session (QXL Xorg driver on kernel 5.4) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1864644/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp