12.04 will not shutdown or restart

[nick rundy]

Selecting power-Cog > shutdown results in user being logged out. Selecting power-cog > shutdown from the LightDM screen does nothing. Selecting power-cog > shutdown > restart does nothing.

Ubuntu will not shutdown nor restart.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity-2d-shell 5.7.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-19.31-generic-pae 3.2.12
Uname: Linux 3.2.0-19-generic-pae i686
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
Date: Wed Mar 21 19:20:26 2012
ExecutablePath: /usr/bin/unity-2d-shell
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120301)
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity-2d
UpgradeStatus: Upgraded to precise on 2012-03-12 (8 days ago)

[Launchpad Janitor (janitor)]

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

[nqzero (nqzero)]

"sudo shutdown -h now" from the command line works for me. it's only the gui interface (ie power-cog) that's not working. is this the same behavior that you're seeing @nick rundy ?

[nqzero (nqzero)]

there are some proposed work-arounds here:

https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/838792

if i disable lightdm auto-login then the power-cog gui works correctly. unfortunately that's not an option for me ...