Cannot shutdown or restart from user session with nvidia drivers in an xorg session

[Doug McMahon]

Fresh install of 09/07 image on Lenovo y510p laptop GK107M [GeForce GT 755M]
nvidia-375 drivers installed, tested.
Then fully updated
Absolutely nothing else done..

Note: this occurred both before & after the gdm3 update.

What happens:
Attempting to restart from either the gui or in terminal leads to a black screen with blinking cursor. Waiting does nothing.
Going to tty1 shows wall of text, cursor just blinks there also.

However if I go to tty7 then the shutdown immediately proceeds & finishes.

What also works is instead of attempting shutdown normally going to tty2 & issuing command there.

This is also reported to happen to Desktop nvidia gpu users whose hardware is better with nvidia drivers 3.40 or earlier, i.e. they can't use wayland either.

As A side note this does not occur with lightdm

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gdm3 3.25.90.1-0ubuntu4
ProcVersionSignature: Ubuntu 4.12.0-12.13-generic 4.12.8
Uname: Linux 4.12.0-12-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Sep 7 17:25:19 2017
InstallationDate: Installed on 2017-09-07 (0 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170906)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)

[Doug McMahon (mc3man)]

This appears to happen mainly if one -
boot up, login
log out/in, then attempt a shutdown/restart

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[gernophil (gernophil)]

I have the exact same problem on my IdeaPad 520s with an Geforce MX 940. It happens everytime when I have an active Nvidia card (prime-select nvidia). With prime-select intel the poweroff/reboot works fine.

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 17.10 (artful) reached end-of-life on July 19, 2018.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.