Please use the workaround of lightdm to get the machine usable, and then run this command to send us more information about it:
apport-collect 1808658 ** Tags added: black-screen nvidia ** Tags added: bionic cosmic ** Changed in: gdm3 (Ubuntu) Status: New => Incomplete -- 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/1808658 Title: display goes blank and system hangs after (and sometimes before) gdm3 login with nvidia-driver-390 and a gtx 970m To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1808658/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs