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Re: Software CPU cooling - apm / acpi

Eduard Bloch wrote:

#include <hallo.h>
* Olivier Guyotot [Thu, Dec 05 2002, 08:18:40PM]:
I would like to cool my CPU in the same way CPUIdle does it under
windows : using the Hlt instruction when the CPU is idle. As far as I
know, it's possible to achieve this under linux with apm or acpi, but I
have never succeded.

I am running a Debian unstable, kernel 2.4.19-k7 (binary package) with
an Athlon XP 1700+ on a MSI K7T266 Pro2.
I first tried with apm, loading the module with the following options:
apm power_off=1 idle_threshold=90
This seems to work fine for the poweroff function, but that's all. I was
expecting to see a process "kapm_idle" running, but it never happened.
And looking at the sources of apm, I came across this:

Won't help you much with Athlons. Get lvcool from


Thank you very much. lvcool seems to work fine with my motherboard. Right now, the temperature of my CPU is only 28°C instead of 45° (with the case open)! That's great!

Best regards

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