From owner-freebsd-ppc@FreeBSD.ORG Mon Jun 27 14:28:37 2011 Return-Path: Delivered-To: freebsd-ppc@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4381E106564A; Mon, 27 Jun 2011 14:28:37 +0000 (UTC) (envelope-from paul@gromit.dlib.vt.edu) Received: from lennier.cc.vt.edu (lennier.cc.vt.edu [198.82.162.213]) by mx1.freebsd.org (Postfix) with ESMTP id E78AA8FC1E; Mon, 27 Jun 2011 14:28:36 +0000 (UTC) Received: from zidane.cc.vt.edu (zidane.cc.vt.edu [198.82.163.227]) by lennier.cc.vt.edu (8.13.8/8.13.8) with ESMTP id p5RERQkN019983; Mon, 27 Jun 2011 10:28:06 -0400 Received: from auth3.smtp.vt.edu (EHLO auth3.smtp.vt.edu) ([198.82.161.152]) by zidane.cc.vt.edu (MOS 4.2.2-FCS FastPath queued) with ESMTP id PTV15983; Mon, 27 Jun 2011 10:28:05 -0400 (EDT) Received: from pmather.tower.lib.vt.edu (pmather.tower.lib.vt.edu [128.173.51.28]) (authenticated bits=0) by auth3.smtp.vt.edu (8.13.8/8.13.8) with ESMTP id p5RES5pt004525 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Mon, 27 Jun 2011 10:28:05 -0400 Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: text/plain; charset=us-ascii From: Paul Mather In-Reply-To: <4E0682D3.9070607@freebsd.org> Date: Mon, 27 Jun 2011 10:28:05 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: References: <38D89FC6-13F1-4AEF-AF41-0A377EE49DC4@gromit.dlib.vt.edu> <4DFFDEEE.40200@freebsd.org> <4E02C593.6020405@freebsd.org> <4E0682D3.9070607@freebsd.org> To: Nathan Whitehorn X-Mailer: Apple Mail (2.1084) X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu paul@gromit.dlib.vt.edu 5 none X-Junkmail-Info: (0) X-Junkmail-Status: score=10/50, host=zidane.cc.vt.edu X-Junkmail-Signature-Raw: score=unknown, refid=str=0001.0A020202.4E089375.021E,ss=1,fgs=0, ip=0.0.0.0, so=2010-07-22 22:03:31, dmn=2009-09-10 00:05:08, mode=multiengine X-Junkmail-IWF: false Cc: freebsd-ppc@freebsd.org Subject: Re: Xserve G5 keeps shutting down X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Jun 2011 14:28:37 -0000 On Jun 25, 2011, at 8:52 PM, Nathan Whitehorn wrote: >> That's extraordinarily odd. And you said there was no fsck or other = problem after the reboot? It looks like it shut down normally? Sorry, I probably wasn't clear. The system does an unclean power-off. = I have to fsck when I start it up again. What is odd, to me, is that this power-off occurred even after = commenting out the shutdown line in the thermal power management driver. = So, it must be something else that is forcibly powering off the system, = maybe something in OpenFirmware, rather like some PC BIOSes will = initiate a power-off when temperatures exceed critical. But, what is = definitely odd is that temperatures don't seem to get so high as to be = critical, so perhaps it is some other hardware state that is triggering = the power-off? >> I notice with the pwm-controlled fans that there is a minpwm and = maxpwm (40 and 100 respectively on my system). Is it possible to lower = the minpwm? I tried to do so via /boot/loader.conf (lowering it to 30) = but that appears to have had no effect. Here is my /boot/loader.conf: >>=20 >> dev.fcu.0.fans.sys_ctrlr_fan.minpwm=3D30 >> dev.fcu.0.fans.pci_fan.minpwm=3D30 >=20 > I've turned the minimum back down. I had turned it up to 40 due to = being frightened by a electronics-burning smell, so that should be fixed = too. I'll build a new kernel and see if things improve. Cheers, Paul.