From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: problem with cpu eating too much power, prize given if solved Date: Mon, 28 Jun 2004 22:40:09 +0200 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040628204008.GK698@openzaurus.ucw.cz> References: <20040624153513.GB19545@rap.rap.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20040624153513.GB19545-EittdKFJ/bZ/SzgSGea1oA@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: keld-6PR53cSIHaE@public.gmane.org Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org Hi! > 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). > S1 is what you want... but... if you get what you asked for, do you realize that for example clock would not update on the desktop in this mode? -- 64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms ------------------------------------------------------- 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