I edited /etc/gdm3/custom.conf and put WaylandEnable=false back in (I had it enabled before to test). Greeter came right up on reboot and my external monitor works again.
What is curious is that my session choice in both cases was/is Gnome on Xorg. So is it possible there's some change in the greeter's behavior? As to using wayland or not. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1753576 Title: GDM freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1753576/+subscriptions -- ubuntu-bugs mailing list firstname.lastname@example.org https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs