What version of the Nvidia driver are you using that has the problem? It might help if you just run this command to automatically attach more information:
apport-collect 1850727 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1850727 Title: [nvidia] Let GDM timeout and it changes to a blank screen where there is no way to recover To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1850727/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs