From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751530Ab2AUSwR (ORCPT ); Sat, 21 Jan 2012 13:52:17 -0500 Received: from lo.gmane.org ([80.91.229.12]:39145 "EHLO lo.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750829Ab2AUSwQ (ORCPT ); Sat, 21 Jan 2012 13:52:16 -0500 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Lubos Kolouch Subject: Re: i915 wakes from suspend to RAM with blank screen after commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0 Date: Sat, 21 Jan 2012 18:51:57 +0000 (UTC) Message-ID: References: <86mx9gkjlv.fsf@sumi.keithp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 188.122.213.132 User-Agent: Pan/0.135 (Tomorrow I'll Wake Up and Scald Myself with Tea; GIT 30dc37b master) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Keith Packard, Sat, 21 Jan 2012 10:15:24 -0800: > 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