From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bernd Schubert Subject: Re: Thinkpads running hot Date: Mon, 22 Aug 2005 23:11:11 +0200 Message-ID: <200508222311.11759.bernd-schubert@gmx.de> References: <43077C3C.5030501@suse.de> <43083B55.4000700@xms.se> <4308A3E6.7080002@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <4308A3E6.7080002-l3A5Bk7waGM@public.gmane.org> Content-Disposition: inline Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Cc: Thomas Renninger List-Id: linux-acpi@vger.kernel.org Hello! > But even I could find the EC address and value to set the fan on full spe= ed > (echo 0x2f 0x50 >/proc/acpi/ibm/ecdump - with ibm_acpi module) > (>5000 instead of ~3700 rpm) , the machine still run very hot. Blimey! Thomas, you can't imagine how happy you made me with this command. = Not=20 that this special command works on my R31, but I never knew how to write da= ta=20 to the EC-table. After the repair of my R31 (see below), they also adjusted= =20 the fan-trigger temperatures *grumble* making the fan more or less always=20 running. It was rather easy to find the fan-trigger temperatures in the=20 ec-table and now I finally can adjust it to normal data. > > However, when passive cooling works well, people shouldn't notice much. > It seems as if these machines are designed to work with OS thermal > management. The userspace governor works nicely and temperature stays at > passive trip point with 1200 instead of 1700 MHz (even on 70 C passive tp > limit it stays at 1200 MHz poking around 70 C - default is 92 C). Hmm, about two years ago I had the same problem on my R31. I sent it to=20 repair, wrote a nice explanation whats going on (about one a4-page), after= =20 not having it back after two weeks I called the repair-centre, they connect= ed=20 me with a technician - he didn't get my error-report, but when I explained = =20 him about the problem, he then seemed to know what to do. I got back the=20 notebook two days after the phone-call, on the report about what they had=20 done was written that the cpu-cooler was not properly connected to the cpu.= =20 Before the repair the cpu-temperature went up to more than 100=B0C, but now= I=20 can't get more than 80=B0C (at high load with fft calculations). Maybe this is also an issue with recent thinkpads? Cheers,=09 Bernd =2D-=20 Bernd Schubert PCI / Theoretische Chemie Universit=E4t Heidelberg INF 229 69120 Heidelberg ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf