From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 05615DDE08 for ; Tue, 23 Dec 2008 08:03:24 +1100 (EST) Subject: Re: schizophrenic G5 ... From: Benjamin Herrenschmidt To: Kevin Diggs In-Reply-To: <494EDB3F.4090604@hypersurf.com> References: <494EDB3F.4090604@hypersurf.com> Content-Type: text/plain Date: Tue, 23 Dec 2008 08:03:15 +1100 Message-Id: <1229979795.4360.18.camel@pasglop> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Sun, 2008-12-21 at 16:11 -0800, Kevin Diggs wrote: > Hi, > > I have a water cooled dual 2.5 GHz G5 (Powermac7,3). It has YDL 6.0 on > it. Using the stock YDL 2.6.23 kernel this machine "appears" to work fine. > > After finally getting it to boot under 2.6.27, it will shut itself off > if put under any significant load. And it is doing it very quickly. Like > within a few seconds of becoming busy. I just discovered it is spitting > out messages about "temperature way above maximum" (from therm_pm72.c). > > This one has the Panasonic cooling system. I have checked behind the > cover and see no evidence of leaks. > > When put under load under the stock YDL kernel, the cpu fans will speed > up for about 2 minutes. Then over the next minute or so they will slow > down almost to idle. Thereafter a whirring sound can be heard every 15 > to 30 seconds lasting about 5 seconds. Which I am guessing is the pump? > The exhaust air barely gets warm? > > Anyone have any ideas? Could the cooling system NOT be correctly > thermally connected to the cpus? I have approx. the same here taking dust under the desk, I'll give it a spin but i might have to wait a couple of days... If mine works, then we'll have to run some more intensive debugging to see what's going on. Cheers, Ben.