Date: Sun, 13 Mar 2011 21:55:25 +0100 From: Torfinn Ingolfsen <torfinn.ingolfsen@broadpark.no> To: freebsd-ppc@freebsd.org Subject: Re: PowerMac G5 Quad - fan control? Message-ID: <20110313215525.b26a6618.torfinn.ingolfsen@broadpark.no> In-Reply-To: <4D7D2935.3070903@freebsd.org> References: <20110312151608.b3240f3d.torfinn.ingolfsen@broadpark.no> <4D7BAA4E.4070908@freebsd.org> <20110313212348.a4fd91cb.torfinn.ingolfsen@broadpark.no> <4D7D2935.3070903@freebsd.org>
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On Sun, 13 Mar 2011 15:29:41 -0500 Nathan Whitehorn <nwhitehorn@freebsd.org> wrote: > On 03/13/11 15:23, Torfinn Ingolfsen wrote: > > On Sat, 12 Mar 2011 11:15:58 -0600 > > Nathan Whitehorn<nwhitehorn@freebsd.org> wrote: > > > >> Different G5 models have different thermal regulation schemes. On the > >> PCI-Express-based systems (e.g. the Quad), CPU temperatures are read out > >> by the smusat driver, and fan control is done by the smu driver. I wrote > >> a small daemon to manage fans on my dual-core G5 that you may want to > >> adapt that can be found at > >> http://people.freebsd.org/~nwhitehorn/powermac112-fancontrol.c > > Thanks! > > > > I've adapted it, my version is here[1]. How did you figure out the target temperature? > > I made up a number that I decided was safe. :P Ok. It seems my machine stabilizes on temps 53/61 or 53/62 when idle. > I run mine from rc.local like this: > /usr/bin/thermald > /dev/null & Ah, thanks! > > My machine just panic'ed (sleeping thread) but I don't know if that was related to this program. > > Any details on the panic (output of uname -a, 32 or 64 bit kernel, > messages, etc.) would be very interesting to see. Unfortunately, it didn't generate a dump. Is this something new with FreeBSD 8.x - it seems like users have to take explicit action to have dumpdev set up? Before, it used to pick up dumpdev="AUTO" from /etc/defaults/rc.conf and we didn't have to do anything else. Anyway: root@kg-g5# uname -a FreeBSD kg-g5.kg4.no 9.0-CURRENT FreeBSD 9.0-CURRENT #119 r217462M: Sat Jan 15 16:05:38 CST 2011 root@comporellon.tachypleus.net:/usr/obj/powerpc.powerpc/usr/src/sys/GENERIC powerpc I think that is a 32-bit kernel? on the positive side, my machine now runs happily, so I don't think that the fancontrol program had anything to do with the panic. -- Torfinn
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