You have been subscribed to a public bug:
display freeze to a striped brown colored screen after logging out.
This bug happens randomly, and sometimes it can be work around by switch
through ttys (ctrl+alt+f1...f2...f...) and switch back to tty7, but sometimes
it can't.
I've encountered this bug in fedora 16(using gdm) with no property
drivers(fglrx) installed, so it may be a X bug.
I'm ready to provide more information.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: lightdm 1.2.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Mon May 14 17:07:29 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
ProcEnviron:
LANGUAGE=zh_CN:zh
TERM=xterm
PATH=(custom, no user)
LANG=zh_CN.UTF-8
SHELL=/bin/bash
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise
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screen freeze after logging out
https://bugs.launchpad.net/bugs/999038
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