[Dell Inspiron 7577] System took a very long time to shutdown with nouveau driver

[Po-Hsu Lin]

CID: 201706-25581 Dell Inspiron 7577

Steps:
  1. Install Bionic + update with LiveUSB
  2. Boot to the desktop
  3. Poweroff / restart the system from the menu in the upper right corner

Result:
  It will take about 5 minutes for this system to poweroff. It will hang for about 3 minutes right after you click on the power off button. The ctrl + alt + prtscr + b magic key combination is still alive. This is the last thing that could be seen from syslog:

May 30 12:29:27 ubuntu-Inspiron-7577 systemd[858]: Stopping D-Bus User Message Bus...
May 30 12:29:27 ubuntu-Inspiron-7577 gvfsd[1038]: A connection to the bus can't be made
May 30 12:29:27 ubuntu-Inspiron-7577 gnome-session[942]: gnome-session-binary[942]: WARNING: Lost name on bus: org.gnome.SessionManager
May 30 12:29:27 ubuntu-Inspiron-7577 gnome-session-binary[942]: WARNING: Lost name on bus: org.gnome.SessionManager
May 30 12:29:27 ubuntu-Inspiron-7577 gnome-session[942]: gnome-session-binary[942]: CRITICAL: We failed, but the fail whale is dead. Sorry....
May 30 12:29:27 ubuntu-Inspiron-7577 gnome-session-binary[942]: CRITICAL: We failed, but the fail whale is dead. Sorry....
May 30 12:29:27 ubuntu-Inspiron-7577 gsd-xsettings[1223]: Error releasing name org.gtk.Settings: The connection is closed

After that, you will see console output and nouveau is complaining about fail-to-idle.

If you have the nvidia-390 driver installed, this issue will gone.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-22-generic 4.15.0-22.24
ProcVersionSignature: User Name 4.15.0-22.24-generic 4.15.17
Uname: Linux 4.15.0-22-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed May 30 12:34:00 2018
InstallationDate: Installed on 2018-05-29 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)

[Po-Hsu Lin (cypressyew)]

Tested with 4.17rc7, issue still exist.

But the situation is a bit different, the system was hanging there for more than 30 minutes, and the magic key is not working.