FAO Ubuntu team : feature request : CPU frequency control ?

[Paul Sladen]

On Sun, 5 Dec 2004, Vincent Trouilliez wrote:

Hello Vincent,

> I am trying to make my PC as silent as possible [..but 'emifreq'
> complains..] "CpuFreq support not available.

There are two factors here;  Ubuntu ships with 'powernowd' (works with all
processors that have power-saving, not just AMD chips) which attempts to
keep the CPU speed as low as possible for the work you're doing.

This is done to preserve both battery-life and heat-issues;  whilst still
giving you the full power of the CPU when you need it.

The second part, is that it is only possible to control the CPU speed if the
correct modules to support /your/ processor are loaded successfully.  This
is being worked on for Hoary at:

  http://www.ubuntulinux.org/wiki/CPUFreqModuleLoading

On some platforms (PowerPC) the support should already be in there.

> Or is it just my system (H/W) that doesn't support ? 

That is a possibility, if you send me (offlist if you prefer) the contents
of '/proc/cpuinfo' I shall try and let you know.

	-Paul
-- 
Is there no safe way to travel?  London, GB