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Date:      Wed, 17 Mar 2004 16:13:59 -0500
From:      Scott Lambert <lambert@lambertfam.org>
To:        FreeBSD-mobile@FreeBSD.org
Subject:   Re: PowerNow in mobile AthlonXP
Message-ID:  <20040317211359.GB53072@www.lambertfam.org>
In-Reply-To: <20040317202916.GA5235@trimind.de>
References:  <74EC3F3BA88A824FA61D3FD88097DB821915EF@ITIServer03.iti> <20040311180557.GB78217@www.lambertfam.org> <20040313000147.GQ28592@poupinou.org> <1079517975.10165.0.camel@localhost> <20040317192650.GB41487@www.lambertfam.org> <20040317202916.GA5235@trimind.de>

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On Wed, Mar 17, 2004 at 09:29:16PM +0100, Sascha Klauder wrote:
> On Wed, Mar 17, 2004 at 02:26:50PM -0500, Scott Lambert wrote:
> > My DSDT may be messed up.  However, thanks to Bruno, I now have the
> > ability to set my processor speed to six different levels without going
> > through ACPI.  This has significantly cooled my lap, reduced local noise
> 
> Uh...that sounds pretty cool.  Where to pick up the patches?
> Please? :)
> 

http://poupinou.org/cpufreq/bsd/powernow_k7.tar.gz

Bruno also found a little bug in sys/dev/acpica/acpi_cpu.c
that was preventing my machine from showing the C2 option on
hw.acpi.cpu.cx_supported.

Using the two options in combination has lowered my laptop CPU
temperature 28 degrees Centigrade.  Just using the ACPI option yields a
20 degree temperature drop.  The powernow_k7 option on it's own yields a
22 degree drop at the lowest speed setting.

-- 
Scott Lambert                    KC5MLE                       Unix SysAdmin
lambert@lambertfam.org       http://www.lambertfam.org/~lambert/resume.html



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