From mboxrd@z Thu Jan 1 00:00:00 1970 From: ben lamothe Subject: Thinkpad T40 Fan Date: Wed, 4 Feb 2004 06:13:02 -0500 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040204061302.7e828f2b.blamothe@mit.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: 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 List-Id: linux-acpi@vger.kernel.org Hi, I have an IBM Thinkpad T40 and the fan won't shut off. If the computer is left idle after power on, after about five minutes the fan turns on and stays on seemingly for hours. This behavior is not exibited in Windows, on the contrary, the fan is almost never on. Using the thermal zone driver from acpi, I've noticed that the fan is on for temperatures as low as 86 degrees. I am using kernel 2.6.2-rc2-mm1 and I have acpi, sleep states, battery, button, fan, processor, thermal zone, and relaxed aml all compiled in, and I also notice the problem using kernel 2.6.0 and kernel 2.4.23. I also have cpu frequency scaling support, all three governors (userspace as default), cpu frequency table helpers, acpi processor p-states and, since this a centrino machine, Enhanced speedstep all compiled in my kernel. I have tried using both Cpufreqd and Cpudynd to scale the cpu, which they do smoothly according to /proc/cpuinfo, but the fan still persistently stays on. Can anyone help me with this? Thank you very much, -ben lamothe ------------------------------------------------------- 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