From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750828AbVHQDz7 (ORCPT ); Tue, 16 Aug 2005 23:55:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750827AbVHQDz6 (ORCPT ); Tue, 16 Aug 2005 23:55:58 -0400 Received: from linuxwireless.org.ve.carpathiahost.net ([66.117.45.234]:9936 "EHLO linuxwireless.org.ve.carpathiahost.net") by vger.kernel.org with ESMTP id S1750828AbVHQDz6 (ORCPT ); Tue, 16 Aug 2005 23:55:58 -0400 Subject: Re: [PATCH] [Fwd: Console locking and blanking] From: Alejandro Bonilla Beeche Reply-To: abonilla@linuxwireless.org To: Steven Rostedt Cc: Benjamin Herrenschmidt , Linux Kernel list , Andrew Morton In-Reply-To: <1124250271.5764.76.camel@localhost.localdomain> References: <1124242875.8848.10.camel@gaston> <1124249381.8848.19.camel@gaston> <1124250271.5764.76.camel@localhost.localdomain> Content-Type: text/plain Date: Tue, 16 Aug 2005 21:55:48 -0600 Message-Id: <1124250948.4855.93.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2005-08-16 at 23:44 -0400, Steven Rostedt wrote: > On Wed, 2005-08-17 at 13:29 +1000, Benjamin Herrenschmidt wrote: > > On Wed, 2005-08-17 at 11:41 +1000, Benjamin Herrenschmidt wrote: > > > > > (I'm blind and I use a braille display. I use those functions to blank > > > my laptop's screen so people don't read it, and hopefully to conserve > > > power.) > > At the OLS I learned that the backlight of a laptop (when the screen is > black, but still glows) actually spends more wattage than when the > screen is lit. So, unless you actually turn the laptop display off, > switching it to black will actually burn the battery quicker. This sounds stupid. Who told you this? The actual brightness is the one that consumes the most battery. Seriously, who told you such thing? .Alejandro