From owner-freebsd-acpi@FreeBSD.ORG  Wed May  5 08:13:17 2004
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Date: Wed, 5 May 2004 17:12:27 +0200
To: christian uhrhan <christian.uhrhan@gmx.de>
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From: Bruno Ducrot <ducrot@poupinou.org>
cc: freebsd-acpi@freebsd.org
Subject: Re: ACPI is not working
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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.