The better power management for AMD/ATI Radeon R600 and newer hardware (as described in comment #6) is finally available in the upstream 3.11 linux kernel. The first release candidate (3.11-rc1) of the 3.11 kernel is available at http://kernel.ubuntu.com/~kernel-ppa/mainline/ and instructions on how to install and uninstall it are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds
To use this power management for the AMD/ATI Radeon you will need to select it at boot by adding radeon.dpm=1 to your GRUB kernel boot options as described at https://help.ubuntu.com/community/Grub2/Troubleshooting#Editing_the_GRUB_2_Menu_During_Boot -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1166916 Title: temperature overheating of cpu and radeon in 12.10 and above Status in “xserver-xorg-video-ati” package in Ubuntu: Confirmed Bug description: 13.04 Ubuntustudio 64 bit under moderate load temperature is around 81c under high load (playing video inside a virtualbox) temperature hit 94c.... at which point I turned it off I have tested this with all 3 of the radeon drivers, with no significant difference. The radeon temp is always about 2-3 degrees hotter than the rest, so suspect that is souce of problem. 10.10 does not have this problem at all 12.04 runs 5-10 degrees hotter on average than does 10.10 but starting with 12.10 the temperature gets unusably hot ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: linux-image-3.8.0-14-lowlatency 3.8.0-14.9 ProcVersionSignature: Ubuntu 3.8.0-14.9-lowlatency 3.8.4 Uname: Linux 3.8.0-14-lowlatency x86_64 ApportVersion: 2.9.2-0ubuntu5 Architecture: amd64 CasperVersion: 1.330 Date: Tue Apr 9 17:11:07 2013 LiveMediaBuild: Ubuntu-Studio 13.04 "Raring Ringtail" - Alpha amd64 (20130403) MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: linux-lowlatency UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1166916/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
