From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1SGCd7-0004lX-Qw for garchives@archives.gentoo.org; Fri, 06 Apr 2012 17:07:22 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id D5534E0CFE; Fri, 6 Apr 2012 17:07:07 +0000 (UTC) Received: from mailout-de.gmx.net (mailout-de.gmx.net [213.165.64.22]) by pigeon.gentoo.org (Postfix) with SMTP id 63D40E0C6A for ; Fri, 6 Apr 2012 17:05:35 +0000 (UTC) Received: (qmail invoked by alias); 06 Apr 2012 17:05:34 -0000 Received: from p54B8FFD2.dip.t-dialin.net (EHLO localhost) [84.184.255.210] by mail.gmx.net (mp040) with SMTP; 06 Apr 2012 19:05:34 +0200 X-Authenticated: #4040096 X-Provags-ID: V01U2FsdGVkX18KpeQEVXwKAQLkRPdmtK0WsVaza0HxIKjqxCYFHz 3IC1+V4HhTbCRi Date: Fri, 6 Apr 2012 19:05:32 +0200 From: Frank Steinmetzger To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Tips for saving power needed... particulary on laptops Message-ID: <20120406170532.GA3488@eisen.lan> Mail-Followup-To: gentoo-user@lists.gentoo.org References: <4F786E9A.60404@gmail.com> <2320074.M2zdZi9kkL@localhost> <20120402052250.GB12677@waltdnes.org> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="2oS5YaxWCcQjTEyO" Content-Disposition: inline In-Reply-To: <20120402052250.GB12677@waltdnes.org> User-Agent: Mutt 1.5.21 (2010-09-15, Gentoo 1.5.21-r1) X-Y-GMX-Trusted: 0 X-Archives-Salt: 3ce3113b-ea20-4b7c-9b36-1fc2b4223cdb X-Archives-Hash: 5de6b89f521b9dfad58c94ba6c69eb17 --2oS5YaxWCcQjTEyO Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Apr 02, 2012 at 01:22:50AM -0400, Walter Dnes wrote: > > > Hi, > > >=20 > > > admin of a colo-center keeps complaining my server is going > > > a little over power-limit (which they have set as ~120W per > > > 24h/avg, while my server needs ~130-135W). So I need to find > > > a way to save at least those 15W, or I will be moved to > > > higher tarif (which means higher costs for server-housing). > [=E2=80=A6] > The following may seem obvious, but here goes... >=20 > * remove unnecessary video cards, and drivers. Most colo machines > should do OK with just a text console running on the onboard GPU. > Dump all video driver stuff "/dev/agpgart (AGP Support)" and > "Direct Rendering Manager". This assumes you're not running X on > your colo machines. mc (Midnight Commander) is a great text-based > tool, along the lines of ye olde Norton Commander. >=20 > * disable sound cards/chips in BIOS and remove drivers and kernel > support. As a follow-up question that=E2=80=99s been on my mind for a long time: can= I always assume that when there is no driver loaded, the device is really (physicall= y) off, so it doesn't use any power (at all)? Or are there exceptions to that rule (like hardware known to be buggy)? My concern comes from having an ageing laptop whose battery I want to preserve as well as I can. In my case, that would be bluetooth, ethernet, possibly even the optical drive, and even the touchpad. I can switch the latter off using Fn+F9, which even works on the tty. But does that really switch it off, or does the kern= el merely ignore its input then? In case it matters: it=E2=80=99s a Samsung P50 (professional line laptop fr= om 2006). --=20 Gru=C3=9F | Greetings | Qapla' Please do not use my email addresses within any Facebook service. Dyslexics of the world untie! --2oS5YaxWCcQjTEyO Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) iEYEARECAAYFAk9/As4ACgkQGafpl66MV0zu3gCfYhJFOluezfNN4VyeqqADhhRu /ykAoJ9k0fm/ZyeIDJz7aqPUafJbNd/K =5eqE -----END PGP SIGNATURE----- --2oS5YaxWCcQjTEyO--