From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: Thermal trip_points, raise them? Date: Tue, 20 Jan 2004 21:49:09 +0100 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040120204909.GB9749@elf.ucw.cz> References: <20040120002629.A21624@carrot.whitman.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline In-Reply-To: <20040120002629.A21624-M+MqQPf49VVrC2pQ8WgM2De48wsgrGvP@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Albert Schueller Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org Hi! > After a brief search of the archives on this subject, I have the > following questions: >=20 > (I'm running ACPI that's in the stock 2.6.1 kernel, this is a debian > woody (mostly stable) machine, with, of course, the 2.6.1 kernel. )=20 >=20 > - Ever since I started running acpi on my Dell SmartStep 200N > I've been getting thermal shutdowns. I suppose having them is > better than not having them, but even in a well-ventilated, > cool room, the machine will shutdown if I compile a kernel. > This is a 2GHz P4 (mobile). It's clean inside, no dust. > According to the specs at Intel the chip is safe upto 100=B0C > (though maybe not the stuff around it, I don't know). >=20 > In > =20 > /proc/acpi/thermal_zone/THR1/trip_points =3D 72 C > /proc/acpi/thermal_zone/THR2/trip_points =3D 78 C >=20 > well shy of the 100=B0C on the Intel spec. Heh, on my athlon omnibook xe3 they have critical at ~100C, but hardware kills it at 83C. They obviously never tested it :-( > I was planning to hack the acpi source and raise the trip > points to something like 80 and 86, but I can't find where > they're being set. This makes me think that they're being > obtained from the BIOS somehow. >=20 > Is it ok to just: >=20 > cat "80 C" > /proc/acpi/thermal_zone/THR1/trip_points > cat "86 C" > /proc/acpi/thermal_zone/THR2/trip_points You should be able to echo "critical:passive:active1:active2" > .../trip_points=20 . [Ouch, someone should write readme about this one. Do you volunteer]? > I'll take responsibility for any thermal damage, I'm just > wondering if this will raise the trip_points for me. With passive cooling, you should be able to keep it below trip points... > Alternatively, would removing the thermal module before a big > job, like a kernel compile, and then reinserting it be ok? > Or, would it break the ACPI that's currently running? > (again I take responsibility for thermal damage). You should not be able to cause thermal damage. If you hit it *real* hard, hardware should hard-off it. [And it works on most machines]. Pavel --=20 When do you have a heart between your knees? [Johanka's followup: and *two* hearts?] ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn