From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750822AbVHQDon (ORCPT ); Tue, 16 Aug 2005 23:44:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750823AbVHQDon (ORCPT ); Tue, 16 Aug 2005 23:44:43 -0400 Received: from ms-smtp-04.nyroc.rr.com ([24.24.2.58]:30091 "EHLO ms-smtp-04.nyroc.rr.com") by vger.kernel.org with ESMTP id S1750822AbVHQDom (ORCPT ); Tue, 16 Aug 2005 23:44:42 -0400 Subject: Re: [PATCH] [Fwd: Console locking and blanking] From: Steven Rostedt To: Benjamin Herrenschmidt Cc: Linux Kernel list , Andrew Morton In-Reply-To: <1124249381.8848.19.camel@gaston> References: <1124242875.8848.10.camel@gaston> <1124249381.8848.19.camel@gaston> Content-Type: text/plain Organization: Kihon Technologies Date: Tue, 16 Aug 2005 23:44:31 -0400 Message-Id: <1124250271.5764.76.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 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. -- Steve