I've now performed apport-collect 1844944. I also reproduced the user switch failure and generated journal.txt immediately after. Journal.txt is attached.
** Attachment added: "journal.txt" https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1844944/+attachment/5292746/+files/journal.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1844944 Title: Ubuntu 19.10 switching users broken with Nouveau driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1844944/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs