From mboxrd@z Thu Jan  1 00:00:00 1970
From: Johannes Bauer <dfnsonfsduifb@gmx.de>
Subject: Re: Fan running with Intel Graphics
Date: Tue, 13 Dec 2011 22:30:42 +0100
Message-ID: <4EE7C402.2070003@gmx.de>
References: <4EE7BFAC.9070006@gmx.de> <20111213132316.474ae20a@jbarnes-desktop>
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To: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org

Hi Jesse,

wow - that was fast! :-)

Am 13.12.2011 22:23, schrieb Jesse Barnes:
> On Tue, 13 Dec 2011 22:12:12 +0100
> Johannes Bauer <dfnsonfsduifb@gmx.de> wrote:
>> And it's not even doing *anything*, the CPUs are all at almost 0%
>> (therefore I don't think there's much heat coming from there). I'm not
>> doing heavy graphics (not even light graphics, not even moving the mouse!).
>>
>> How can I measure the graphics card load? Would it improve anything if I
>> compiled a kernel myself and switched to 3.1? Is there anything at all I
>> can do?
> 
> In the console, as root, can you:
> 
> $ cat /sys/kernel/debug/dri/0/i915_cur_delayinfo | grep Lowest

Okay:

joelaptop [/sys/kernel/debug/dri]: cat
/sys/kernel/debug/dri/0/i915_cur_delayinfo | grep Lowest
Lowest (RPN) frequency: 650MHz

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

This doesn't work for

joelaptop [/sys/kernel/debug/dri]: uname -a
Linux joelaptop 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:28:43 UTC
2011 x86_64 x86_64 x86_64 GNU/Linux

Since i915_max_freq does not exist -- do I need to switch to a more
recent kernel version?

I also noted that dri/ has two subdirectories, 0 and 64. Does this mean
anything?

Best regards and thank you for your help,
Joe