From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751323Ab2AUSy1 (ORCPT ); Sat, 21 Jan 2012 13:54:27 -0500 Received: from host132-213-122-188.magnalink.cz ([188.122.213.132]:52175 "EHLO nbgentoo.localdomain" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750980Ab2AUSy0 (ORCPT ); Sat, 21 Jan 2012 13:54:26 -0500 X-Greylist: delayed 569 seconds by postgrey-1.27 at vger.kernel.org; Sat, 21 Jan 2012 13:54:26 EST Date: Sat, 21 Jan 2012 19:44:53 +0100 From: Lubos Kolouch To: Keith Packard Cc: linux-kernel@vger.kernel.org Subject: Re: i915 wakes from suspend to RAM with blank screen after commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0 Message-ID: <20120121184453.GA2698@nbgentoo> References: <86mx9gkjlv.fsf@sumi.keithp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <86mx9gkjlv.fsf@sumi.keithp.com> X-Operating-System: Linux nbgentoo 3.3.0-rc1-dirty 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 Sat, Jan 21, 2012, 10:15:24, Keith Packard wrote: > On Sat, 21 Jan 2012 10:32:14 +0000 (UTC), Lubos Kolouch wrote: > > > I git bisected it to commit > > cd9dde44f47501394b9f0715b6a36a92aa74c0d0 is the first bad commit > > commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0 > > Author: Adam Jackson > > Date: Fri Oct 14 12:43:49 2011 -0400 > > Did you try reverting this single commit on top of 3.3-rc1? > > And, can you collect the dmesg output with the kernel parameter drm.debug=0xe > added to the boot line, both messages at boot time *and* messages during > resume would be needed. If it works at boot time, I'm quite surprised it > somehow doesn't work at resume... I tried now and when I revert this line : - return (pixel_clock * bpp + 7) / 8; + return (pixel_clock * bpp + 9) / 10; resume works OK for me with 3.3-rc1. Before change (failed) ---------------------- dmesg after boot - http://paste.pocoo.org/show/538343/ dmesg after failed resume - http://paste.pocoo.org/show/538344/ After change (OK) ----------------- dmesg after boot - http://paste.pocoo.org/show/538345/ dmesg after OK resume - http://paste.pocoo.org/show/538346/ Luboš Kolouch