after upgrading to 10.10 and switching back to the opensource driver nothing changed, temp still > 70° and fan was always running. I know that the new kernel 2.6.35.x has some radeon specific powersaving features implemented, after searching a bit I've found the relevant information. It seems that the default powerprofile is the high one. It is possible to override this, check the power method: cat /sys/class/drm/card0/device/power_method => should be profile echo auto > /sys/class/drm/card0/device/power_profile => enables auto profile switching, low on bat, high on AC now check the GPU frequ: cat /sys/kernel/debug/dri/0/radeon_pm_info default engine clock: 550000 kHz current engine clock: 219370 kHz default memory clock: 800000 kHz current memory clock: 249750 kHz voltage: 900 mV PCIE lanes: 16
after setting the profile to auto, temp. goes down immediately. For more detailed description of the power saving functions look at: http://www.overclock.net/linux-unix/731469-how-power-saving-radeon-driver.html cheers -- [ATI Graphics][Lucid] laptop runs hot, shorter battery life, fan always on https://bugs.launchpad.net/bugs/563156 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
