[Bug 50327] CPU power consumption and temperature way to high when using radeon drivers.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=50327

--- Comment #4 from Alex Deucher <agd5f at yahoo.com> 2012-05-25 08:47:03 UTC ---
You should be able to force the GPU to low clocks by selecting the low power
mode:
sudo bash -c "echo low > /sys/class/drm/card0/device/power_profile"

See this link for more info:
http://wiki.x.org/wiki/RadeonFeature#KMS_Power_Management_Options

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