From owner-freebsd-questions@FreeBSD.ORG Tue Aug 24 18:05:47 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 BFD2E10656A7 for ; Tue, 24 Aug 2010 18:05:47 +0000 (UTC) (envelope-from cpghost@cordula.ws) Received: from mail-yw0-f54.google.com (mail-yw0-f54.google.com [209.85.213.54]) by mx1.freebsd.org (Postfix) with ESMTP id 860A88FC08 for ; Tue, 24 Aug 2010 18:05:47 +0000 (UTC) Received: by ywt2 with SMTP id 2so1416950ywt.13 for ; Tue, 24 Aug 2010 11:05:46 -0700 (PDT) MIME-Version: 1.0 Received: by 10.101.206.19 with SMTP id i19mr7675749anq.87.1282673146464; Tue, 24 Aug 2010 11:05:46 -0700 (PDT) Received: by 10.101.7.36 with HTTP; Tue, 24 Aug 2010 11:05:46 -0700 (PDT) X-Originating-IP: [93.203.38.202] In-Reply-To: References: Date: Tue, 24 Aug 2010 20:05:46 +0200 Message-ID: From: "C. P. Ghost" To: Chris Maness Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-questions@freebsd.org Subject: Re: Spontaneous Reboots (I thought it was Virtualbox Kernel Modules) 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, 24 Aug 2010 18:05:47 -0000 On Tue, Aug 24, 2010 at 7:29 PM, Chris Maness wrote: > I have commented out the lines that load kernel modules for > virtualbox, and made sure they were gone with kldstat. However I am > still getting VERY infrequent spontaneous reboots. So it is not the > modules. I am thinking hardware. It has a temperature alarm that > sounds when it is hot, but since I have cleaned it out I have not had > any issues with heat. I am thinking bad processor/ram. It is > behaving the same way before/after the upgraded to the latest release. > What do you guys think? Unless you're using ECC RAM, bad RAM should still be #1 on your watchlist, closely followed by bad PSU. Even RAM that worked fine in the past can start exhibiting bit errors a few years later (maybe due to mechanical stress, i.e. vibrations or frequent temperature differences?) and esp. el cheapo PSUs have the tendency to degrade over time. Of course, a software bug may always be possible. Have you tried to get a core dump? If so, does the error always happen at the same place (backtrace / bt is your friend)? If the error keeps occurring at different locations, it's almost always dodgy hardware. > Regards, > Chris Maness -cpghost. -- Cordula's Web. http://www.cordula.ws/