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Date:      Sun, 28 Oct 2012 14:42:11 -0500 (CDT)
From:      Nathan Whitehorn <nwhitehorn@freebsd.org>
To:        Michael Copeland <michael@kryptos-security.com>
Cc:        freebsd-ppc@freebsd.org
Subject:   Re: Quick question about dev.smu dev.smusat on powermac11,2
Message-ID:  <alpine.BSF.2.00.1210281249500.41855@banshee.munuc.org>
In-Reply-To: <CAKLtBCjdNpXKktDX0YAdRn2OPEAeXoP3G9XY-aDuRBCLdXKdPA@mail.gmail.com>
References:  <CAKLtBCjdNpXKktDX0YAdRn2OPEAeXoP3G9XY-aDuRBCLdXKdPA@mail.gmail.com>

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It should work fine (it does on my desktop, which is a G5 of the same 
model). Since I wrote that program, fan control has moved to the kernel. 
The fans should be fairly quickly responsive (the algorithm is quite 
basic) but should never go to full or cause a panic. Which release are you 
running? There were some improvements to fan control in 9.1.
-Nathan

On Sun, 28 Oct 2012, Michael Copeland wrote:

> Is the fan control disabled by default on a GP dual core? Only reason I ask
> is that the fans on spool up under full load, and that usually results in a
> panic.
> I did make a rather simple program and associated script to control the
> fans, but this happens to result in the fans constantly going up and down
> by about 300-400 rpm even while doing something simple like portsnap
> extract. I checked the list after doing that, and found a thread where
> someone else already did the same thing(a common problem of mine, I usually
> try to fix it myself without checking the list). I swapped out the program
> written by Nathan, but my results are the same. It DOES work, but I was
> only wondering if it's normal for the fan speed to vary so often.
>
> Thanks,
>
> Michael
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