Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756232AbaAFVLS (ORCPT ); Mon, 6 Jan 2014 16:11:18 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:47752 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755635AbaAFVLQ (ORCPT ); Mon, 6 Jan 2014 16:11:16 -0500 Date: Mon, 6 Jan 2014 22:11:15 +0100 From: Pavel Machek To: Ramkumar Ramachandra Cc: LKML Subject: Re: [QUERY] Power consumption on a 2013 MBP Message-ID: <20140106211115.GA23421@amd.pavel.ucw.cz> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue 2013-12-31 15:24:00, Ramkumar Ramachandra wrote: > Hi, > > On a 2013 Macbook Pro, Linux consumes 21W of power while OS X consumes > just 9W. I found this very disturbing; Linux more than halves the > battery life of the device. I checked to see that I wasn't running any > especially power-hungry applications or drivers (using powertop). I'm > using just one proprietary driver: the broadcom-wl wireless driver; > otherwise, I'm running the stock 3.12 kernel from Arch's repositories. > > How do I figure out what is consuming power, and what can I do to help > minimize consumption? USB usually does that. Try rmmoding hcd(s). If that does not help, try removing other modules. Oh and try without that broadcom-wl driver. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/