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From: Bruno Ducrot <ducrot@poupinou.org>
Subject: Re: PowerNow in mobile AthlonXP
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On Thu, Mar 11, 2004 at 01:05:57PM -0500, Scott Lambert wrote:
> On Thu, Mar 11, 2004 at 09:17:11AM +0100, antic_eye wrote:
> > Hi there,
> > 
> > I googled all the web for a solution, so I hope you could help me. I
> > have a PackardBell Laptop with a mobile athlon xp inside. I installed
> > FreeBSD 5.2.1 3 weeks ago and everything works fine. Even the screen
> > flickering under x I fixed (it lasts me one week :o)).
> > 
> > My problem is, that I dont know how to trottle the cpu frequency. Linux
> > has the cpufreqd. Is there anything appropriate in BSD? ACPI is up and
> > running (expect the StandBy mode - it doesn't work)
> 
> I think Nate Lawson is working on getting a generic CPU frequency
> maniplation system added.  My athlon laptop also runs full speed all the
> time and has no throttle options in the acpi sysctls.
> 
> hw.acpi.cpu.cx_supported: C1/0
> hw.acpi.cpu.cx_lowest: 0
> hw.acpi.cpu.cx_history: 42619368/0
> 

That strange.  I would expect that your laptop will support at least C2
since without it a laptop based on Athlon is somewhat overheaten.

Cheers,

-- 
Bruno Ducrot

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.