Thanks. "it seems to keep re-trying" indeed suggests something is crashing, so to report a crash please follow these instructions:
https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment The process that would be crashing even for the login screen is called 'gnome-shell'. ** Tags added: nouveau ** Summary changed: - GDM seems to be crashing with multiple monitors + GDM seems to be crashing with multiple monitors (6720x1050 from 4x 1680x1050) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1836278 Title: [nouveau] Login screen seems to be crashing with multiple monitors (6720x1050 from 4x 1680x1050) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1836278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs