From owner-freebsd-stable@FreeBSD.ORG Mon Feb 20 03:49:18 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6A3A216A420 for ; Mon, 20 Feb 2006 03:49:18 +0000 (GMT) (envelope-from dsymonds@gmail.com) Received: from pproxy.gmail.com (pproxy.gmail.com [64.233.166.182]) by mx1.FreeBSD.org (Postfix) with ESMTP id EBD7443D48 for ; Mon, 20 Feb 2006 03:49:17 +0000 (GMT) (envelope-from dsymonds@gmail.com) Received: by pproxy.gmail.com with SMTP id i49so988834pyi for ; Sun, 19 Feb 2006 19:49:16 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=dTyxo4cdQz6rCr3jv+JBQk//gw7ITHITYYWrcLbKhw/ZTrYPj18N1Euar/+eMLnjWtLyGLebK2KY6+wdT/WhIehYg7XKI8o/b4S7H+OeZ2dhmNzZ0mndo3xy/eS7cjX1TJ9+HwS6PRMULpDdcAQW8Epohl6yH6BJ6oIFRFZxG9M= Received: by 10.35.12.13 with SMTP id p13mr1615443pyi; Sun, 19 Feb 2006 18:44:06 -0800 (PST) Received: by 10.35.114.5 with HTTP; Sun, 19 Feb 2006 18:44:06 -0800 (PST) Message-ID: Date: Mon, 20 Feb 2006 13:44:06 +1100 From: "Dave Symonds" To: "Kevin Oberman" In-Reply-To: <20060220020235.4C98645043@ptavv.es.net> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline References: <20060220020235.4C98645043@ptavv.es.net> Cc: freebsd-stable@freebsd.org Subject: Re: Need serious help with Dell D600 Latitude laptop and Power Management please :) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Feb 2006 03:49:18 -0000 On 2/20/06, Kevin Oberman wrote: > There are many things that can help. > > First, I don't see a reason for "-a adaptive" on powerd. If you are > plugged in, why cut performance? Often my laptop is not doing anything, so I drop the speed to minimise power consumption, and thus heat and noise. > Try "sysctl hw.acpi.cpu" and see what values you have for cx_lowest while > on battery. It should be the largest "C" value available, usually 3C43 > or C4. This is very significant. To change this, use the following in > rc.conf: > economy_cx_lowest=3D"LOW" > This is now the default in -current, but that change has not gone into > anything else. I'll give this a go. > If you can run without USB, take it out of yo9ur kernel. It will keep > your system way to busy, even if nothing is plugged into any USB port. This might be trickier. I'll have to do some fancy shell scripting to load/unload kernel modules. Most of the time I'm on battery I'm not using any USB devices, so this should cut my power drain considerably. Dave. -- "Strange women lying in ponds distributing swords is no basis for a system of government."