Comment 17 for bug 557829

I'm also affected by this bug.

This is my original bug report downstream:

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/595335

Binary package hint: xserver-xorg-video-ati

When I'm doing a demanding CPU activity (ripping a CD, doing OCR, etc), the computer shuts itself down due to overheating (more than 99 C).

I've tried running sudo sensors-detect but no modules were loaded.

I've also tried booting with option "acpi.power_nocheck", but to no use.

I've also tried adding options radeon modeset=1 to /etc/modprobe.d/radeon-kms.conf.

Lastly, I updated my BIOS from the vendor's webpage, but it didn't help either.

This only happens while I'm on the open-source ATI drivers. When I tried the proprietary fglrx drivers, I wasn't able to reproduce it.

See also: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/557829

and https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/373669

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg-video-ati 1:6.13.0-1ubuntu5
ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-generic i686
Architecture: i386
Date: Wed Jun 16 21:03:26 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: Acer Aspire 5542
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-23-generic root=UUID=261f9489-5351-4e83-94f0-d5aa3a52907b ro quiet splash
ProcEnviron:
 LC_TIME=en_GB.UTF-8
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-video-ati
dmi.bios.date: 12/09/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.08
dmi.board.name: JV50TR
dmi.board.vendor: Acer
dmi.board.version: Rev
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: None
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.08:bd12/09/2009:svnAcer:pnAspire5542:pvr0100:rvnAcer:rnJV50TR:rvrRev:cvnAcer:ct10:cvrNone:
dmi.product.name: Aspire 5542
dmi.product.version: 0100
dmi.sys.vendor: Acer
system:
 distro: Ubuntu
 codename: lucid
 architecture: i686
 kernel: 2.6.32-23-generic