From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keld =?iso-8859-1?Q?J=F8rn?= Simonsen Subject: problem with cpu eating too much power, prize given if solved Date: Thu, 24 Jun 2004 17:35:13 +0200 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040624153513.GB19545@rap.rap.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline 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 Dear ACPI developers, I have a problem with my Acer Travelmate 233. Many times I just want to read the screen, eg emails or documents, and then still the cpu will be in idle mode, where it uses 7.5 W out of the about 15 W that the whole machine uses. I have found out from Intel data sheets that my Mobile Intel Celeron 2.0 GHz CPU consumes 7.5 W in idle loop/ stop grant/sleep states, (and 5.0 W i deep sleep state). So I would like to have the CPU stopped completely (consuming 0 W) while I still could read the screen. In that way I should be able to have about double the lifetime on the battery, going to about 7 hours from the 3.5 hours I have now. I would like the machine to wake up again by any keystroke on the keyboard or mouse input. I would like the input to be reacted upon (not just used to wake up the system, and then forgotten). I do not have the skills to program this myself, so instead I offer a prize of USD 1000 to the person(s) that can give me a patch for kernel 2.6 and appropiate documentation that can solve the above problem. The patch needs to be GPL, and demonstrably run on my laptop. I need the patch before 2004-10-01, after what date the prize offer expires. I would like that the patch was written in a general way to cover for CPUs that burn considerable power in idle loop and other states, so that other users can benefit from it. Also I would prefer that the patch be rolled into the normal ACPI kernel source tree, but the latter request is not a condition for the prize. Best regards Keld ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com