From owner-freebsd-mobile@FreeBSD.ORG Sun May 2 15:13:50 2004 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 686B216A4CE for ; Sun, 2 May 2004 15:13:50 -0700 (PDT) Received: from mxfep01.bredband.com (mxfep01.bredband.com [195.54.107.70]) by mx1.FreeBSD.org (Postfix) with ESMTP id DEE7F43D31 for ; Sun, 2 May 2004 15:13:44 -0700 (PDT) (envelope-from peter.schuller@infidyne.com) Received: from scode.mine.nu ([213.113.221.99] [213.113.221.99]) by mxfep01.bredband.com with ESMTP id <20040502221344.SCYI21262.mxfep01.bredband.com@scode.mine.nu>; Mon, 3 May 2004 00:13:44 +0200 Received: from localhost (localhost [127.0.0.1]) by scode.mine.nu (Postfix) with ESMTP id 078C314E82A; Mon, 3 May 2004 00:15:21 +0200 (CEST) From: Peter Schuller To: freebsd-mobile@freebsd.org Date: Mon, 3 May 2004 00:15:16 +0200 User-Agent: KMail/1.6 References: <20040502220115.BBA985D0A@ptavv.es.net> In-Reply-To: <20040502220115.BBA985D0A@ptavv.es.net> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200405030015.16417.peter.schuller@infidyne.com> cc: Markie Subject: Re: Laptop ACPI question X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 02 May 2004 22:13:50 -0000 > SpeedStep, as I understand it, is adjustment of the CPU clock speed and > is VERY directly tied to battery life. It is what systems supporting > SpeedStep adjust when moving from AC to battery modes. E.g. my T30, by > default, runs at 1.8 GHz on AC and 1.2 GHz on battery (with my BIOS > configuration). SpeedStep is a marketing name and I am unwilling to say > that it is limited to the CPU speed. It may include some of the other > power management tools like deep sleep modes. Ah, okay. In that case it seems to be party supported already (on 5.2, I think even 5.1). Or if not SpeedStep, then some alternative to it. On the T40p I am able to control the speed of the CPU in performance/economy mode by modifying sysctl variables. (Though I am actually running with APM since ACPI causes hangs - though I'm just about to try it on CURRENT.) > Support of CPU frequency is something that is actively being developed > and will almost certainly be in 5.3. PCI power mode support is also in > active development and was committed to CURRENT a few weeks ago, but at > least partly backed out due to problems on a few laptops. (It worked > GREAT on mine, though). I hope it is returned soon as it make my sound > work after a suspend. I remember reading about the PCI stuff and the DPMS/screen poweroff issue on -current. But I must have missed the part about it involving power saving, I thought it was just bug/crash fixes. > So power management is getting closer all the time and I am pretty > confident (for someone who is NOT writing the code) that it will all be > ready when V5 is declared STABLE. Looking forward to a 5-STABLE regardless :) Thanks! -- / Peter Schuller, InfiDyne Technologies HB PGP userID: 0xE9758B7D or 'Peter Schuller ' Key retrieval: Send an E-Mail to getpgpkey@scode.org E-Mail: peter.schuller@infidyne.com Web: http://www.scode.org