Fan constantly running with Intel Graphics card

Fan constantly running with Intel Graphics card

[Patrick O'Byrne]

Hi,

I am having an issue with a new Dell E5520 laptop (Intel(R) Core(TM) i5-2520 CPU
@ 2.5GHz) running Linux Mint 13 (Kernel: Linux 3.2.0-23-generic (i686)). I am
using the graphics driver that ships with the kernel:

00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller [8086:0126] (rev 09)

My problem is that the fan is constantly on even though I am not doing any
intensive processing.  The laptop runs very nicely (quietly) when I boot into
Windows 7.

There was a recent post which suggests running the following commands:

$ cat /sys/kernel/debug/dri/0/i915_cur_delayinfo | grep Lowest
then echo that value into the max freq file, e.g.:
$ echo 400 > /sys/kernel/debug/dri/0/i915_max_freq


I tried this (and restarted the machine) but still no joy, it seems that in my
case GPU frequency is not to blame.  Any advice would be greatly appreciated.

Regards
Patrick

Re: Fan constantly running with Intel Graphics card

[Ben Widawsky]

On Fri, 10 Aug 2012 14:28:35 +0000 (UTC)
Patrick O'Byrne <pobyrne2@gmail.com> wrote:

> Hi,
> 
> I am having an issue with a new Dell E5520 laptop (Intel(R) Core(TM)
> i5-2520 CPU @ 2.5GHz) running Linux Mint 13 (Kernel: Linux
> 3.2.0-23-generic (i686)). I am using the graphics driver that ships
> with the kernel:
> 
> 00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd
> Generation Core Processor Family Integrated Graphics Controller
> [8086:0126] (rev 09)
> 
> My problem is that the fan is constantly on even though I am not
> doing any intensive processing.  The laptop runs very nicely
> (quietly) when I boot into Windows 7.
> 
> There was a recent post which suggests running the following commands:
> 
> $ cat /sys/kernel/debug/dri/0/i915_cur_delayinfo | grep Lowest
> then echo that value into the max freq file, e.g.:
> $ echo 400 > /sys/kernel/debug/dri/0/i915_max_freq
> 
> 
> I tried this (and restarted the machine) but still no joy, it seems
> that in my case GPU frequency is not to blame.  Any advice would be
> greatly appreciated.
> 
> Regards
> Patrick
> 
> 
> 

Can you please try sysfs_rc6_residency test in intel-gpu-tools? This
might be the same issue I am currently fighting.

-- 
Ben Widawsky, Intel Open Source Technology Center