Hi madbiologist, thank you very much for your persistance. (somehow launchpad no longer shows this bug in my list...) I did try some of your suggestions above, but nothing really seemed to help.
I am happy to report that UbubtuStudio 14.04 BETA 1 (Alpha) AMD64 is greatly improved compared to the 13.x versions. it is still nowhere near as cool as it was in 10.10, but the 14.04 temperature is similar to but not quite as good as what I used to see in 12.04. It runs several degrees hotter than 12.04, but a lot cooler than 13.x. After the recent round of updates, 12.04 is now also running much hotter :-( so I was getting desperate for a fix. I am happy to say that 14.04 is running cool enough to be usable, the range is mid 60's to low 80's, whereas I was never able to use 13.x due to overheating. 10.10 is proof that it could still run much cooler (low 50's), but 10.10 had other problems (audio, bluetooth). so overall this is a huge win. -- 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: Fix Released 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 : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

