Fedora 17 - CPU Fan Speed

[Mateusz Marzantowicz]

On 13.06.2012 16:44, Bruno Wolff III wrote:
> On Wed, Jun 13, 2012 at 14:43:18 +0200,
>   Mateusz Marzantowicz <mmarzantowicz at osdf.com.pl> wrote:
>>
>> Thanks for the reply. I'm now trying to identify which fan is noisy. The
>> problem is that I already have latest BIOS update installed and week ago
>> on Ubuntu 12.04 I had no such problem with fans going to fast. My load
>> avg is 2.0 at max (3 kvms running but not so busy) and long term CPU
>> utilization is below 5%-10%. The only difference is that previously I
>> had AMD Catalyst driver installed for Radeon HD 5750 and now I'm using
>> the default Open Source driver, so I'll be investigating graphics at
>> first. I also noticed that video card is warmer than other parts of my
>> set but it might be a false alarm. Thanks anyway for the reply.
>
> If it's you GPU fan that is running at high speed, that makes more
> sense. Graphics card power management is still a work in progress.
> There are a lot of improvements coming down the pike, that should make
> it for F18.
>
> Looking at http://www.x.org/wiki/RadeonFeature it looks like power
> management features are complete for evergreen (HD5xxx). It also looks
> like you can set a profile by storing a value into
> /sys/class/drm/card0/device/power_method . It might be worth playing
> with that.

Hey! It works! My video card is quiet again (I can hear my hard drive
working again :) )! Now I must find out how to make this changes to /sys
persistent across system reboots. Then see if there is some stock
Fedora/X.org tool to make this changes in more elegant manner (I use
echo for this.)


Mateusz Marzantowicz