Re: CPU Frequency on default Sarge kernel

[Giacomo Mulas <gmulas@ca.astro.it>]

On Mon, 3 Oct 2005, Eduardo Costa Lisboa wrote:

> Hi. I can't set the CPU frequency on my notebook. I am using the
> default kernel, 2.6.8-11-amd64-generic.
>
> I would like to know if is it possible to set the processor frequency
> using cpufrequtils on the AMD64 processor.

yes, it is. You probably need to load the appropriate module, or (if 
you prefer) to compile a new kernel including it. The appropriate module 
to load depends on the processor you have, possible choices being

- powernow-k8 (for Athlon64, Turions, Opterons, 64bit AMD cpus in general)
- p4-clockmod (for Intel P4 with 64 bit extension)
- speedstep-centrino (I don't know what this is for, probably some 64 bit 
mobile Intel chip)
- acpi-cpufreq (generic driver using ACPI calls)

I don't know which ones are compiled in the default Debian generic 
kernels. If the module you need is not available in the kernel you are
running you will need to either find a precompiled kernel package which
includes them or compile your own (usually better if you are at ease with
it, since you can tailor the kernel to your needs)

Bye
Giacomo

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Giacomo Mulas <gmulas@ca.astro.it>
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