Julien - poor hardware design is a possibility. Also make sure you have removed all dust from inside the computer, particulary from the CPU and GPU fans and heatsinks (if it's a desktop, open the case, if it's a laptop at the very least run a vacuum cleaner nozzle along the external air vents). You can also put the edge of a book under the back edge of your laptop so that it is raised off the desk at a slight angle, or purchase a laptop cooling pad (with USB powered fans) to sit the laptop on.
I neglected to mention that to use the new power management feature on R700 and newer hardware (other than APUs) requires installation of the latest AMD graphics microcode (ucode) files to /lib/firmware/radeon These are available at http://people.freedesktop.org/~agd5f/radeon_ucode/ Get the version ending in "smc". -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/570589 Title: Lucid: Overheating due to no PM for ATI KMS Status in “linux” package in Ubuntu: Fix Committed Bug description: As you know the code in Lucid's -32 kernel doesn't have support for power management on ATI cards with KMS (which is default). This is not a problem for desktop users, but laptop users with beefy cards may run into severe overheating issues. I expect the forums to flood with these problems once lucid is final. I have experienced this on two (laptop) machines at home: GPU and CPU share a heatsink thus the CPU gets very hot too when idling. In one case this lead to the CPU (both are C2Ds) being constantly stuck at 800 MHz a few minutes after booting (Once it went over 75° or something like that), in the other case the CPU temps went up to 80° in idle even with the fans at full speed. Switching to fglrx OR a newer kernel and PM OR UMS and PM fixes this, but I feel KMS on ATI as a default is a bad decision right now. I hope this gets fixed with 10.10 as the PM code hits MMs kernel. Most likely we won't be able to do anything about this bug (unless there's a kernel upgrade in one of lucid's point releases) so I guess the purpose of this bugreport is more or less to track this issue during the development of MM. --- Architecture: amd64 DistroRelease: Ubuntu 10.04 InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100113) Package: linux (not installed) ProcEnviron: LANGUAGE=de_AT:de:de_DE:de_CH:de_LU:de_LI:de_BE:en PATH=(custom, user) LANG=de_AT.utf8 SHELL=/bin/bash Tags: lucid Uname: Linux 2.6.34-rc5-klausi x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev plugdev sambashare tape vboxusers video To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/570589/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
