ACPI is not working
Bruno Ducrot
ducrot at poupinou.org
Wed May 5 08:13:17 PDT 2004
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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