From owner-freebsd-questions@FreeBSD.ORG Tue Dec 28 00:37:14 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8BE0C1065679 for ; Tue, 28 Dec 2010 00:37:14 +0000 (UTC) (envelope-from perryh@pluto.rain.com) Received: from agora.rdrop.com (agora.rdrop.com [IPv6:2607:f678:1010::34]) by mx1.freebsd.org (Postfix) with ESMTP id 6B2E28FC19 for ; Tue, 28 Dec 2010 00:37:14 +0000 (UTC) Received: from agora.rdrop.com (66@localhost [127.0.0.1]) by agora.rdrop.com (8.13.1/8.12.7) with ESMTP id oBS0bDRg096573 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 27 Dec 2010 16:37:13 -0800 (PST) (envelope-from perryh@pluto.rain.com) Received: (from uucp@localhost) by agora.rdrop.com (8.13.1/8.12.9/Submit) with UUCP id oBS0bD6v096572; Mon, 27 Dec 2010 16:37:13 -0800 (PST) Received: from fbsd61 by pluto.rain.com (4.1/SMI-4.1-pluto-M2060407) id AA16936; Mon, 27 Dec 10 16:35:41 PST Date: Mon, 27 Dec 2010 16:35:43 -0800 From: perryh@pluto.rain.com To: axelbsd@ymail.com, markand@live.fr Message-Id: <4d1930df.v5575ML0Khi8eeVp%perryh@pluto.rain.com> References: In-Reply-To: User-Agent: nail 11.25 7/29/05 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-questions@freebsd.org Subject: Re: [Bulk] FreeBSD crash and CMOS bad checksum X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Dec 2010 00:37:14 -0000 Alexandre wrote: > On Mon, Dec 27, 2010 at 9:59 AM, David Demelier wrote: > > I was working and suddenly FreeBSD freezes, I needed to hard reboot > > and when the BIOS post came two beeps appears with this message: > > > > CMOS/GPNV checksum bad > > ... > > What does that mean? I guess a hardware failure is coming up. > > Have you tried to change the battery on the moterboard ? IME, a failing CMOS battery usually causes that sort of problem only when power-cycling the system. If the "hard reboot" was done using a "reset" button, without having to turn off the power, it's more likely that whatever caused FreeBSD to freeze also corrupted the CMOS contents. One easy way to find out is to shut down normally, power off, leave it off for a couple of minutes, then turn it back on. If it is a battery problem the BIOS will be complaining about the CMOS again, due to power having been off, even though the shutdown was clean. Then you get to hope that the CMOS in fact has a replaceable battery, not one of those CMOS-and-battery-all-in-one-package things that some manufacturers have been known to use.