ACPI is not working

[Alexandre Sunny Kovalenko]

On Wed, 5 May 2004 17:12:27 +0200
Bruno Ducrot <ducrot at poupinou.org> wrote:

> On Tue, May 04, 2004 at 10:25:08PM -0700, Nate Lawson wrote:
> > On Wed, 5 May 2004, christian uhrhan wrote:
> > > Hi,
> > >
> > > >
> > > > I looked at your dmesg and ACPI is working fine.  You can get increased
> > > > CPU idle power savings by doing:
> > > >
> > > > sysctl hw.acpi.cpu.cx_lowest=1
> > >
> > > thx, i'll try it out
> > 
> > You can put that in /etc/sysctl.conf if it works ok.  Make sure it works
> > before doing that though.  It should lower the temps with no real
> > performance hit (unlike throttling).
> > 
> > > > The acpi_cpu driver is not detecting that your system supports throttling.
> > > > Please post a link to your full ASL:
> > > >    acpidump -t -d > christian.asl
> > >
> > > you can take a look at it at http://ahrlug.dyndns.org/acpi_problem/christian.asl
> > 
> > Your system does not support throttling.  It has a 0 for duty_width.
> > However, it does support ACPI performance states so once the driver is
> > finished for those, you will be able to step back your clock to save
> > power/heat.  That's a different and better mechanism than throttling
> > anyway.
> 
> It's a mobile athlon...  Christian, you can test that :
> http://www.poupinou.org/cpufreq/bsd/powernow_k7.tar.gz
> if you can't wait.
> 
> -- 
> Bruno Ducrot
> 
> --  Which is worse:  ignorance or apathy?
> --  Don't know.  Don't care.
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That worked beautifully here (AVERATEC 3150H with Athlon XP-M 1400). Got five
voltage/frequency levels, could switch between them at will... This is cool
in more then one sense of the word ;)

-- 
Alexandre "Sunny" Kovalenko.