Please still follow the steps in comments #2 and #3. Although something else stands out - that you're using the nouveau kernel driver. Nouveau is prolific for kernel crashes, freezes, and other bugs. So ideally please use the 'Additional Drivers' app to install a proprietary Nvidia driver instead.
** Tags added: nouveau -- 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/1964539 Title: 42beta: screen unlock gets stuck on primary display, secondary display is unlocked To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1964539/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
