Re: How does one control fans?
Le Thu, Oct 13, 2005 at 11:29:05AM +0100, marc écrivait/wrote:
> Ah, something else to explore. I installed the cpudyn package and that
> stops the fan a little. However, reading man cpudyn, it mentions that
> throttling is integrated into kernel from 2.6 on - I'm using 2.6.13.
> When I removed it, and rebooted, the fan went back to never switching
> off. [...]
> I noticed that a lot of folk use
> # modprobe cpufreq_userspace
> so I loaded that, which at least stops the fan from time to time,
> although I have no idea what it does! (Despite goggling for a while...)
> That said, it seemed to have created the /proc/acpi/processor/ chain.
> Which modules and packages are the "best" too use, or to start with?
[....]
> Should I install acpi? I see a debian acpi package, but it appears to be
> different to the stuff on that web-site.
I would suggest using the cpufreq_userspace, thermal, acpi_cpufreq and
other modules and also use acpid and cpudyn (or cpufreqd or
powernowd). I'm not understanding every detail, but it seems that you
need all of them. The kernel modules are used by the user-land
cpufreqd and acpid.
The acpi and yacpi commands report to the user the state of the system
(including thermal and power states).
You might be interested in having a look at
http://starynkevitch.net/Basile/msi_s270_linux.html which details the
configuration of my laptop. But I don't claim to understand all the
issues involved.... (laptop hardware is becoming quite complex, with
lots of legacy physical devices)
Regards
--
Basile STARYNKEVITCH http://starynkevitch.net/Basile/
email: basile(at)starynkevitch(dot)net
8, rue de la Faïencerie, 92340 Bourg La Reine, France
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