radeon power_profile "default" causes laptop overheating and crashes
pasik at iki.fi
Thu Sep 1 11:29:02 PDT 2011
On Mon, Aug 29, 2011 at 07:20:16PM +0300, Pasi Kärkkäinen wrote:
> I have a laptop with Mobility Radeon HD 3650, and the opensource radeon driver makes
> the laptop overheat and crash (or kernel does thermal emergency shutdowns).
> Even when the laptop is totally *idle* the system overheats!
> As a default power_profile "default" is in use (and causes problems):
> # cat /sys/class/drm/card0/device/power_profile
> I can workaround the issue with:
> # echo low > /sys/class/drm/card0/device/power_profile
> .. which makes the temperature go down 10-20 degrees celsius,
> and the fans slow down and the system feels much cooler.
> I've seen this problem with Linux 2.6.35 (Fedora 14), Linux 2.6.38 (Fedora 15)
> and Linux 3.0.0 (Fedora 16 alpha).
> Is there anything I should try to troubleshoot the problem?
> Is "default" power_profile supposed to cause overheating?
> Using proprietary AMD fglrx driver doesn't have this problem,
> fglrx works out-of-the-box and the laptop does not overheat.
> dmesg from Linux 3.0.0 here: http://pasik.reaktio.net/fedora/f16/dmesg-hp-elitebook-8530p-f16-alpha.txt
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