Ubuntu
nvidia-graphics-drivers-545 package

  1. Bug #2055153
  2. Comment #10

Comment 10 for bug 2055153

Revision history for this message
Daniel van Vugt (vanvugt) wrote : Re: Boots slowly or not at all when NVIDIA driver is installed

The slow boots seem to be due to the Nvidia kernel driver interfering in backlight control, which might also be a kernel bug:

Feb 28 14:13:24 alvin-Legion-Pro-7-16IRX8H systemd-udevd[515]: 0000:00:02.0: Worker [560] processing SEQNUM=4649 is taking a long time
Feb 28 14:13:56 alvin-Legion-Pro-7-16IRX8H systemd[1]: systemd-backlight@backlight:nvidia_0.service: start operation timed out. Terminating.
Feb 28 14:13:56 alvin-Legion-Pro-7-16IRX8H systemd[1]: systemd-backlight@backlight:nvidia_0.service: Main process exited, code=killed, status=15/TERM
Feb 28 14:13:56 alvin-Legion-Pro-7-16IRX8H systemd[1]: systemd-backlight@backlight:nvidia_0.service: Failed with result 'timeout'.
Feb 28 14:13:56 alvin-Legion-Pro-7-16IRX8H systemd[1]: Failed to start Load/Save Screen Backlight Brightness of backlight:nvidia_0.
Feb 28 14:13:57 alvin-Legion-Pro-7-16IRX8H systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:nvidia_0...
Feb 28 14:13:57 alvin-Legion-Pro-7-16IRX8H systemd[1]: Finished Load/Save Screen Backlight Brightness of backlight:nvidia_0.

The failed boots are some kind of failure to start gdm, although in one case there was also an Nvidia kernel driver crash. Please check for crashes in /var/crash and if found then report them using the ubuntu-bug command. If not found then please enable the debug section in /etc/gdm3/custom.conf, reboot and collect more logs from failed boots.