From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756532AbZJ2Rko (ORCPT ); Thu, 29 Oct 2009 13:40:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756511AbZJ2Rkn (ORCPT ); Thu, 29 Oct 2009 13:40:43 -0400 Received: from mail-bw0-f227.google.com ([209.85.218.227]:44178 "EHLO mail-bw0-f227.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756502AbZJ2Rkm convert rfc822-to-8bit (ORCPT ); Thu, 29 Oct 2009 13:40:42 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=e18kbsEmTrKM2+oFYLyvQTJyM1USbx1Awa1MCEoE33u4Qa2PHEV4jwKYlBQEaj8Ku+ Hm3eFQRo7tbsZbkkWrS4sJ4Lf+Bkju8fE2dG0K5Q2iY9i0tmiCR73bUOzKcDmrnVOIY4 4ZGwBEgCacZwku4yL8v6uHb3Zx935FDvogXn0= MIME-Version: 1.0 In-Reply-To: References: <20091005092148.4341d9ab@jbarnes-g45> <20091029094723.7e5a3376@jbarnes-g45> Date: Thu, 29 Oct 2009 13:40:44 -0400 X-Google-Sender-Auth: 70565d02822841be Message-ID: Subject: Re: [resend] i915: high power consumption after suspend/resume From: Andrew Lutomirski To: Jesse Barnes Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.sf.net Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 29, 2009 at 1:22 PM, Andrew Lutomirski wrote: > On Thu, Oct 29, 2009 at 12:47 PM, Jesse Barnes wrote: >> On Wed, 7 Oct 2009 23:44:35 -0400 >> Andrew Lutomirski wrote: >>> > I probably need to save/restore some more of the power saving state >>> > across suspend/resume...  Can you file a bug for this at >>> > bugs.freedesktop.org so it doesn't get lost? >>> >>> Submitted as https://bugs.freedesktop.org/show_bug.cgi?id=24386 >> >> Andrew, are you still seeing this after the various fixes that have >> landed in Linus's tree? > > I'm not entirely convinced it's suspend/resume related any more, but > there's still a problem.  When I got your email, my system had been up > for awhile (running Linus' 964fe080d94db82a3268443e9b9ece4c60246414 > (approximately 2.6.32-rc5) plus drm-intel/for-linus from a couple days > ago for the watermark fix)), suspended and resumed several times, and > logged in and out several times.  I turned off wireless and power > consumption was 9.0 watts. > > I switched to console and killed X.  Power consumption still 9.0 > watts.  The system was almost completely idle. > > I rebound i915.  Power consumption dropped to 7.3 watts. > > I restarted X and logged back in.  System froze hard (whoops). > > It looks like something is getting the chip stuck in a high-power state. I just suspended and resumed and power consumption stayed low. I'll try and get an intel_reg_dumper diff next time I trigger this bug. --Andy