When I configure gdm as my default display manager (
dpkg-reconfigure gdm3) and then reboot, I get a black screen with a blinking cursor. From there, I cannot do anything since the ttys does not work (ctrl+alt+F1 to F7). I could not figure out why.
In order to resolve this issue, I boot into safe mode, reconfigure lightdm and then reboot.
I observed that gdm could not start for some reason (hence the black screen).
$ systemctl status gdm.service ● gdm.service - GNOME Display Manager Loaded: loaded (/lib/systemd/system/gdm.service; static; vendor preset: enabled) Active: inactive (dead) Nov 04 16:46:05 rigel systemd: gdm.service: Unit cannot be reloaded because it is inactive.
When I manually start gdm
systemctl status gdm.service I am able to logout and log back in using gdm. After reboot, the black screen occurs again with the blinking cursor.
Any ideas? Thanks.
GNOME Shell 3.30.1 Ubuntu 18.10 cosmic Kernel: x86_64 Linux 4.18.0-10-generic NVIDIA driver 410.73 (GeForce GTX 970)