From owner-freebsd-stable Thu Mar 1 2:25:57 2001 Delivered-To: freebsd-stable@freebsd.org Received: from point.osg.gov.bc.ca (point.osg.gov.bc.ca [142.32.102.44]) by hub.freebsd.org (Postfix) with ESMTP id C32D437B719 for ; Thu, 1 Mar 2001 02:25:52 -0800 (PST) (envelope-from Cy.Schubert@uumail.gov.bc.ca) Received: (from daemon@localhost) by point.osg.gov.bc.ca (8.8.7/8.8.8) id CAA25249 for ; Thu, 1 Mar 2001 02:25:52 -0800 Received: from passer.osg.gov.bc.ca(142.32.110.29) via SMTP by point.osg.gov.bc.ca, id smtpda25247; Thu Mar 1 02:25:40 2001 Received: (from uucp@localhost) by passer.osg.gov.bc.ca (8.11.2/8.9.1) id f21APZW00635 for ; Thu, 1 Mar 2001 02:25:35 -0800 (PST) Received: from cwsys9.cwsent.com(10.2.2.1), claiming to be "cwsys.cwsent.com" via SMTP by passer9.cwsent.com, id smtpdI99739; Thu Mar 1 02:25:23 2001 Received: (from uucp@localhost) by cwsys.cwsent.com (8.11.3/8.9.1) id f21APMm01783 for ; Thu, 1 Mar 2001 02:25:22 -0800 (PST) Message-Id: <200103011025.f21APMm01783@cwsys.cwsent.com> Received: from localhost.cwsent.com(127.0.0.1), claiming to be "cwsys" via SMTP by localhost.cwsent.com, id smtpdao1522; Thu Mar 1 02:24:32 2001 X-Mailer: exmh version 2.3.1 01/18/2001 with nmh-1.0.4 Reply-To: Cy Schubert - ITSD Open Systems Group From: Cy Schubert - ITSD Open Systems Group X-Sender: schubert To: freebsd-stable@freebsd.org Subject: Sig-11's and Spontaneous Reboots Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 01 Mar 2001 02:24:32 -0800 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Many of you have experienced sig-11's, panics, and spontaneous reboots. Conventional wisdom tells us that these problems are caused by bad memory, bad CPU's, overclocked CPU's, and poorly designed or damaged DMA circuitry on the motherboard. I'd been experiencing an increasing number of problems with my server at home. Recently it had failed to stay up for longer than 12 hours. I discovered that the cooling fins in the CPU fan had been clogged with dust. Removing the CPU (with appropriate anti-static measures) and vacuuming out the CPU fan with the narrow vacuum nozzle over the fan and around the CPU fan fins solved my problem. The collection of dust clogged the cooling fins in my CPU fan such that the CPU overheated and the system became extremely unstable. A cheap solution to a potentially expensive problem. Regards, Phone: (250)387-8437 Cy Schubert Fax: (250)387-5766 Team Leader, Sun/Alpha Team Internet: Cy.Schubert@osg.gov.bc.ca Open Systems Group, ITSD, ISTA Province of BC To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message