I can see quite a few graphics-related errors in your log but can't tell what type of GPU it is and also the log is truncated.
Please run: lspci -k > lspcik.txt journalctl -b0 > journal.txt journalctl -b-1 > prevjournal.txt xrandr > xrandr.txt # while both monitors are plugged in and attach the resulting text files here. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1865444 Title: Dual monitor loop login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1865444/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
