Public bug reported:
I own a Dell Inspiron N7010 laptop and ever since 11.04 the system has a
chance to crash whenever I change the screen brightness be it by using
the function keys or just the 'Brightness and Lock' function from the
System Settings application.
The problem with this laptop is that its screen is too bright no matter
where I am and usually I need around 1-3 attempts to successfully change
the brightness so it gets annoying sometimes.
The laptop comes equipped with an ATI Mobility Radeon HD 5400 Series
graphics card and I must say that I do indeed use the proprietary driver
due to it's better power saving capabilities however the problem still
persists with the open source one. The system behaves identically
whether I use the driver from the Ubuntu repositories or the more recent
version downloaded from AMD.
Another thing to note is that once the system has crashed I cannot
change to a TTY and that the laptop FAN spins at maximum power. Also the
Alt + SysRq + REISUB key combo is not working as well.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
Date: Fri Jul 13 20:40:47 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug corruption precise
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1024494
Title:
Scree corruption and system lockup on brightness change
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