From owner-freebsd-mobile@FreeBSD.ORG Thu Jun 19 15:24:23 2003 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 109FA37B401 for ; Thu, 19 Jun 2003 15:24:23 -0700 (PDT) Received: from postal1.es.net (postal1.es.net [198.128.3.205]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5825F43F3F for ; Thu, 19 Jun 2003 15:24:22 -0700 (PDT) (envelope-from oberman@es.net) Received: from ptavv.es.net ([198.128.4.29]) by postal1.es.net (Postal Node 1) with ESMTP (SSL) id MUA74016; Thu, 19 Jun 2003 15:24:14 -0700 Received: from ptavv (localhost [127.0.0.1]) by ptavv.es.net (Tachyon Server) with ESMTP id 0F8055D04; Thu, 19 Jun 2003 15:24:11 -0700 (PDT) To: Tobias Roth In-Reply-To: Message from Tobias Roth <20030619161438.GA20382@speedy.unibe.ch> Date: Thu, 19 Jun 2003 15:24:10 -0700 From: "Kevin Oberman" Message-Id: <20030619222411.0F8055D04@ptavv.es.net> cc: Jesse Guardiani cc: mobile@freebsd.org Subject: Re: IBM T30: more thermal problems X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Jun 2003 22:24:23 -0000 > Date: Thu, 19 Jun 2003 18:14:38 +0200 > From: Tobias Roth > Sender: owner-freebsd-mobile@freebsd.org > > On Thu, Jun 19, 2003 at 12:05:49PM -0400, Jesse Guardiani wrote: > > > I have a T30 here and it was getting real hot and it cooled down in what > > > seems like about 50% by elevating the laptop up by a 1/2" on all four > > > corners. The hot air exhaust cooled down in about 90 seconds. > > nice idea. it didn't help, however. my average build time before a sig 11 > or sig 4 coredump is still less than 5 minutes. > > > My A30p has the exhaust at the back left corner under the screen. When the > > fan turns on the exhaust blows straight out the side (in the direction my > > floppy drive is facing.) > > same with my T30. i still think the laptop lift idea was worth a try, cause > the bottom of my T30 gets very hot sometimes (where the disk is located). > > more ideas or hints anyone? What is the date of you kernel sources? (I mean on the installed kernel, not the new one). There was a problem earlier this year (between 5.0 and 5.1) that generated sig 4s and 11s. I was sure that I had a hardware problem, but saw some odd behavior in other places that made me suspicious. I built new kernel for this system on another system (copied over my config file and my make.conf) and loaded and booted that. Suddenly I could make buildworld again! FWIW, my T30 is currently showing hw.acpi.thermal.tz0.temperature of 79 C. It is in the middle of a buildworld. Before I started it was sitting at about 41 C. This seem no not cause any problems, although it is pretty warm. It seems stable and is not going higher. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634