From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261430AbVGYTBK (ORCPT ); Mon, 25 Jul 2005 15:01:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261431AbVGYTBK (ORCPT ); Mon, 25 Jul 2005 15:01:10 -0400 Received: from prgy-npn1.prodigy.com ([207.115.54.37]:24079 "EHLO oddball.prodigy.com") by vger.kernel.org with ESMTP id S261430AbVGYTBJ (ORCPT ); Mon, 25 Jul 2005 15:01:09 -0400 Message-ID: <42E52FD5.7050705@tmr.com> Date: Mon, 25 Jul 2005 14:30:45 -0400 From: Bill Davidsen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050511 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Tony Lindgren CC: Pavel Machek , jesper.juhl@gmail.com, linux-kernel@vger.kernel.org Subject: Re: 2.6.13-rc3 Battery times at 100/250/1000 Hz = Zero difference References: <20050721200448.5c4a2ea0.lista1@telia.com> <9a8748490507211114227720b0@mail.gmail.com> <20050722144855.GA2036@elf.ucw.cz> <20050722191510.5e120515.voluspa@telia.com> <20050722180236.GA615@atrey.karlin.mff.cuni.cz> <20050722204439.54a63a00.lista1@telia.com> <20050725102103.GG5837@atomide.com> In-Reply-To: <20050725102103.GG5837@atomide.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Tony Lindgren wrote: > * Voluspa [050722 11:46]: > >>On Fri, 22 Jul 2005 20:02:36 +0200 Pavel Machek wrote: >> >>>will not help. It seems like your machine is simply not able to do >>>reasonable powersaving. >> >>Digging up this patch from last month regarding C2 on a AMD K7 implies >>that the whole blame can be put on kernel acpi: >> >>http://marc.theaimsgroup.com/?l=linux-kernel&m=111933745131301&w=2 > > > AFAIK Linux ACPI expects BIOS to contain all the necessary stuff to enable > C2 and C3. Otherwise they won't get enabled, and you have to create a custom > module like the amd76x_pm is. Does that imply that Windows actually has such non-BIOS code, or just knows how to find the BIOS code better, or knows how to do other things, or ??? > > There's been some talk on adding a module to enable C2 and C3 states for > various chipsets, but nobody seems to have enough time to do it... I like your first thought better, "Linux ACPI expects BIOS to contain all the necessary stuff" I have a bunch of laptops of various ages, and I would expect at least the most recent, an ASUS 16??, using a "Centrino" chipset, to be supported. It's one of the top few laptopl chipsets, and Windows can suspecd it. Can also not only detect but use the 1400x1050 screen, but that's another issue :-( Is it possible that the code to find these capabilities is not fully functional? That seems more likely than the system not having the capability. NOTE: "seems" as in experienced guess unsupported by other relevant information. -- -bill davidsen (davidsen@tmr.com) "The secret to procrastination is to put things off until the last possible moment - but no longer" -me