Thanks to #100 I got GDM working again. I just upgraded to nvidia-378 and re-installed xserver-xorg-legacy and finally got GDM working again.
I'll keep lightdm installed just in case it all stops working again. I don't know/remember if this happend while I was fiddling around getting GDM to work. But in /etc/gdm3/custom.conf I had the following line active and it was running havok with GDM opening in different tty every boot an delaying boot time. So make sure to comment out the following line: #AutomaticLoginEnable=True -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1559576 Title: Ubuntu GNOME boots to black screen when using proprietary Nvidia drivers To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1559576/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs