Bug#725704: xserver-xorg-video-radeon: driver overheats laptop, forces constant fan usage

[Al Stone]

On 10/07/2013 09:22 AM, Michel Dänzer wrote:
> On Mon, 2013-10-07 at 09:04 -0600, Al Stone wrote:
>>
>> [...] on using the radeon driver, my laptop now stays very warm
>> constantly, and the cooling fan never stops running (over 24 hours
>> now).  On checking, it appears to be running 5-10 degrees Centigrade
>> warmer all the time, just over the fan trip point.
>>
>> The radeon device is:
>>
>> 02:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV710/M92 [Mobility Radeon HD 4530/4570/545v] [1002:9553]
>
> Can you try booting a 3.11 kernel with radeon.dpm=1 on the kernel
> command line?
>
>

Aha.  That is much, much better.  3.11 without radeon.dpm=1 behaves
the same as 3.10; 3.11 _with_ radeon.dpm=1 quiets everything down.  I
don't know why it had not occurred to me it could be the fan for the
radeon, not the CPUs :(.

That being said, it seems like radeon.dpm=1 should be the default
behavior.

-- 
Ciao,
al
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Al Stone                                         Debian Developer
E-mail: ahs3 at debian.org                          http://www.debian.org
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