[issue1162] fix for extrem notebook heat build-up

[Martin Kielhorn]

Martin Kielhorn <kielhorn.martin at googlemail.com> added the comment:

---------- Forwarded message ----------
From: Martin Kielhorn <kielhorn.martin at googlemail.com>
Date: 2012/4/29
Subject: Re: [issue1162] fix for extrem notebook heat build-up
To: GRML issue tracker <bts at bts.grml.org>


I was jumping to conclusions.
The problem is seems to be related to pcie_aspm.

Without change powertop (version 1.11) reports 40W power consumption
and the following is reported as a policy
~ % cat /sys/module/pcie_aspm/parameters/policy
[default] performance powersave


I added pcie_aspm=force to the kernel boot parameters and have 24.6W power
consumption (which I think is normal for this notebook). The policy is then
reported as:

~ % cat /sys/module/pcie_aspm/parameters/policy
default performance [powersave]


Regards, Martin



2012/4/26 Martin Kielhorn <bts at bts.grml.org>

>
> New submission from Martin Kielhorn <kielhorn.martin at googlemail.com>:
>
> hi,
> i really like grml. the grml system is much more responsive then my
> harddrive based debian when loaded into ram.
> it was quite easy to add emacs, slime and sbcl. now i have a very
> productive common lisp development environment.
>
> big thanks for this.
>
>
> however i struggled with the problem of sever heat build-up for a few days.
> the notebook gets a lot hotter than in debian 6 64bit.
>
> i tried a lot of settings with powertop and finally came to the conclusion
> that the following commands help:
>
> sudo modprobe msr
> root at shaitan ...tools/power/x86/x86_energy_perf_policy #
> ./x86_energy_perf_policy -v 'powersave'
>
> in order to get this program, i had to "apt-get install linux-source-3.1"
> and unpack the source in /usr/src
>
> maybe other people would like to know about this as well.
>
> regards, martin
>
> --
> Martin Kielhorn
> Institute of Photonic Technology, Albert-Einstein Str. 9, 07745 Jena,
> Germany
> Tel.: +49 (0) 3641 206 432
> Randall Division of Cell & Molecular Biophysics, King's College London,
> NHH,
> Guy's Campus, London SE1 1UL, U.K.
> tel: +44 (0) 207 848 6519,  fax: +44 (0) 207 848 6435
>
> ----------
> files: grml-hwinfo-2012-04-26--21-03-43-CEST.tar.bz2, unnamed
> messages: 4332
> nosy: kielhorn.martin
> status: unread
> title: fix for extrem notebook heat build-up
>
> _____________________________________
> GRML issue tracker <bts at bts.grml.org>
> <http://bts.grml.org/grml/issue1162>
> _____________________________________
>



-- 
Martin Kielhorn
Institute of Photonic Technology, Albert-Einstein Str. 9, 07745 Jena,
Germany
Tel.: +49 (0) 3641 206 432
Randall Division of Cell & Molecular Biophysics, King's College London, NHH,
Guy's Campus, London SE1 1UL, U.K.
tel: +44 (0) 207 848 6519,  fax: +44 (0) 207 848 6435




-- 
Martin Kielhorn
Institute of Photonic Technology, Albert-Einstein Str. 9, 07745 Jena,
Germany
Tel.: +49 (0) 3641 206 432
Randall Division of Cell & Molecular Biophysics, King's College London, NHH,
Guy's Campus, London SE1 1UL, U.K.
tel: +44 (0) 207 848 6519,  fax: +44 (0) 207 848 6435

----------
files: grml-hwinfo-2012-04-26--21-03-43-CEST.tar.bz2, unnamed, unnamed, unnamed
messages: 4332, 4335, 4336
nosy: kielhorn.martin
status: chatting
title: fix for extrem notebook heat build-up

_____________________________________
GRML issue tracker <bts at bts.grml.org>
<http://bts.grml.org/grml/issue1162>
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