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

New submission from Martin Kielhorn <kielhorn.martin@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@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

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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@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