Public bug reported:
This usually occurs if two users have been logged on to the system via
X, even if one has logged out.
Select "reboot" or "shutdown" from the power icon and the whole screen
locks up. It does attempt to log out but it simply fails. Nothing
happens. Cannot CTRL or CTRL+ALT to another VT and have to SSH from my
Android phone to issue a sudo reboot or sudo shutdown.
The syslog says it all:
gnome-session[2303]: WARNING: Unable to restart system: Authorization is
required
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-session 3.2.1-0ubuntu8
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic x86_64
NonfreeKernelModules: fglrx wl
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Sun Sep 30 21:42:22 2012
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
PackageArchitecture: all
ProcEnviron:
LANGUAGE=en_GB:en
TERM=xterm
PATH=(custom, user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: gnome-session
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-session (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise running-unity
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https://bugs.launchpad.net/bugs/1059263
Title:
Cannot reboot or shutdown system
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