From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Frey Subject: Re: ACPI throttling to death? Date: Tue, 5 Apr 2005 18:16:30 +0200 Message-ID: <200504051816.30397.jfrey@gmx.de> References: <200504042214.15648.jfrey@gmx.de> <20050405155910.GT2298@poupinou.org> Reply-To: jfrey-Mmb7MZpHnFY@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20050405155910.GT2298-kk6yZipjEM5g9hUCZPvPmw@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: Bruno Ducrot List-Id: linux-acpi@vger.kernel.org On Tuesday 05 April 2005 17:59, Bruno Ducrot wrote: > > Sometimes (I guess when the machine is getting overheated - the > > notebook design is really bad and the fan is quite lousy) ACPI > > temperature monitor shows >70 degrees (Celsius) and the system starts > > throttling. > > > > Until here everything is fine IMO. > > But what happens next is that the systems slows down continuously (you > > can monitor the current throttling level going up and up) until it > > reaches the last level (12%). Soon after that the whole machine is > > locked up hard, display still showing the current graphics. I guess it > > throttled to a "deathly" 0%... > > There isn't 0% level, so I guess the laptop stop due to overheat > condition. Is it possible to control cpu fan in that machine? Is there It is possible to control the fan at two states, but I'm already drinving it on the "loudest" one... > by chance support for power saving idling (at least C2)? Hmmm, if I recall correctly it had C1/C2, but I'm not 100% sure. > cat /proc/acpi/processor/*/power Currently I cannot get hold of that machine, I'll send you that ASAP. Why doesn't throttling reduce CPU temp? It seems to be stuck at about 70 degress all the time... "Stop due to overheat" seems to be best explanation currently... Br Jan -- Jan Frey jfrey-Mmb7MZpHnFY@public.gmane.org ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click