From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755900Ab1HXD6K (ORCPT ); Tue, 23 Aug 2011 23:58:10 -0400 Received: from mx1.redhat.com ([209.132.183.28]:44336 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752296Ab1HXD6E (ORCPT ); Tue, 23 Aug 2011 23:58:04 -0400 Date: Tue, 23 Aug 2011 23:58:01 -0400 From: Dave Jones To: Steevven1 Cc: linux-kernel@vger.kernel.org Subject: Re: Bug Report for Linux Kernel 3.x Message-ID: <20110824035800.GA30312@redhat.com> Mail-Followup-To: Dave Jones , Steevven1 , linux-kernel@vger.kernel.org References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 23, 2011 at 07:19:35PM -0400, Steevven1 wrote: > Hello, > > I would like to report what myself and several others believe to be a > serious bug affecting all Linux kernels 3.0 and up, and none below 3.0 > (2.6.x and lower). > > One-sentence description: On certain hardware, the 3.x series kernels > drain a considerable amount more power than the 2.6-series kernels, up > to 40% more, even when idle. > > The specific hardware I have personally tested is a Lenovo ThinkPad > X220 with an Intel SandyBridge i7 2620M processor. Sounds like https://bugzilla.redhat.com/show_bug.cgi?id=727579 Try booting with i915.i915_enable_rc6=1 Dave