Date: Thu, 19 Jun 2003 15:24:10 -0700 From: "Kevin Oberman" <oberman@es.net> To: Tobias Roth <roth@iam.unibe.ch> Cc: mobile@freebsd.org Subject: Re: IBM T30: more thermal problems Message-ID: <20030619222411.0F8055D04@ptavv.es.net> In-Reply-To: Message from Tobias Roth <roth@iam.unibe.ch> <20030619161438.GA20382@speedy.unibe.ch>
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> Date: Thu, 19 Jun 2003 18:14:38 +0200 > From: Tobias Roth <roth@iam.unibe.ch> > 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
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