Date: Tue, 15 Jan 2008 15:34:41 -0500 (EST) From: Daniel Eischen <deischen@freebsd.org> To: acpi@freebsd.org Subject: Re: How to disable acpi thermal? Message-ID: <Pine.GSO.4.64.0801151525160.29868@sea.ntplx.net> In-Reply-To: <1200369199.2054.38.camel@RabbitsDen> References: <Pine.GSO.4.64.0801142156360.24324@sea.ntplx.net> <1200369199.2054.38.camel@RabbitsDen>
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[ Redirected from -current ] On Mon, 14 Jan 2008, Alexandre "Sunny" Kovalenko wrote: > > On Mon, 2008-01-14 at 21:56 -0500, Daniel Eischen wrote: >> >> Thermal zone 0 skyrockets past 110C in a couple of minutes >> when trying to build a kernel. All the other zones stay >> relatively static. I suspect something is wrong somewhere >> because this machine is very lightly loaded and has never >> had a problem until now. I just upgraded it from 4.x to >> 7.0. > > It need not to be bogus -- if I turn off fan on my ThinkPad it will > overheat and shut itself down within couple of minutes of buildworld, > starting from the relative cool state. From the look of the stuff below > your fan should kick in no later then 10 seconds after tz0 reached 77C. > Do you hear it running before shutdown? If yes, maybe lowering threshold > in AC0 down from 77C will help. If not -- you will need to figure out > who is supposed to turn on the fan. You can dump your ASL (instructions > in the handbook) and post it someplace accessible -- I will take a look > and maybe spot something interesting, but, being far from the expert in > the field, I do not promise too much. I posted the acpidump here: http://people.freebsd.org/~deischen/stl2.iasl The problem is that acpi_thermal keeps shutting down the system after 2 minutes into a buildkernel. The system has no load other than the buildkernel at the time it shuts down. The system is a Intel STL2 Tupelo motherboard with 1 CPU, the other CPU socket being occupied by a CPU terminator thingy. I uncovered the rackmount system and watched it while building a kernel. With the cover off the acpi monitored temperature went to 107C and stayed there. It only took a minute or two to get there. I felt around inside the chassis and nothing was even near being to warm or hot. With the cover on, the temperature goes to 111/112C before being shutdown by acpi_thermal (the limit being 110C). There is no way anything in that chassis is anywhere near 100C. I've disabled acpi_thermal for now, but it'd be nice to get a better fix. Any ideas? -- DE
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