|Summary:||[UPSTREAM REPOST] radeon driver power management is very bad: GPU always runs at maximum clock speed|
|Product:||DRI||Reporter:||Hans Bakker <hansmbakker>|
|Component:||DRM/Radeon||Assignee:||Default DRI bug account <dri-devel>|
|Status:||RESOLVED INVALID||QA Contact:|
|i915 platform:||i915 features:|
Description Hans Bakker 2011-10-03 08:49:39 UTC
[This is not my own bug, but I decided that it would be better to repost it upstream from https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/825989. I have the same problem with my laptop GPU.] The clock frequency of the GPU is set to maximum by default and it is never throttled back. This leads to a laptop battery that is drained quickly, an unneccesary amount of heat produced, an annoying fan, etc etc. Users can set the frequency through the command line like with echo dynpm > /sys/class/drm/card0/device/power_method but most users don't know about this.
Comment 1 Tomas Pospisek 2013-07-22 14:31:45 UTC
Does this change anything?: http://www.botchco.com/agd5f/?p=57 Available in kernel 3.11
Comment 2 Christopher M. Penalver 2016-02-26 06:13:10 UTC
Fix released downstream.