From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752108Ab2DBTEk (ORCPT ); Mon, 2 Apr 2012 15:04:40 -0400 Received: from mail-we0-f174.google.com ([74.125.82.174]:34052 "EHLO mail-we0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751669Ab2DBTEj (ORCPT ); Mon, 2 Apr 2012 15:04:39 -0400 Date: Mon, 2 Apr 2012 21:05:23 +0200 From: Daniel Vetter To: Maciej Rutecki Cc: Daniel Vetter , Linux Kernel Mailing List , dri-devel@lists.freedesktop.org, "Rafael J. Wysocki" Subject: Re: [3.4-rc1][Regression][intel] Resume from suspend to disk hangs on restoring backlight state Message-ID: <20120402190523.GB5260@phenom.ffwll.local> Mail-Followup-To: Maciej Rutecki , Linux Kernel Mailing List , dri-devel@lists.freedesktop.org, "Rafael J. Wysocki" References: <201204021939.39603.maciej.rutecki@gmail.com> <20120402175402.GA5260@phenom.ffwll.local> <201204022100.11096.maciej.rutecki@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <201204022100.11096.maciej.rutecki@gmail.com> X-Operating-System: Linux phenom 3.2.0-1-amd64 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 Mon, Apr 02, 2012 at 09:00:11PM +0200, Maciej Rutecki wrote: > On poniedziałek, 2 kwietnia 2012 o 19:54:02 Daniel Vetter wrote: > > On Mon, Apr 02, 2012 at 07:39:39PM +0200, Maciej Rutecki wrote: > > > Last known good: 3.3 > > > Bad kernel: 3.4-rc1 > > > Subsystem: power management/suspend/dri(intel) > > > > > > When I resume from suspend to disk then system hangs on this screen: > > > http://mrutecki.pl/download/kernel/3.4-rc1/suspend_resume/DSC_5479.jpg > > > > > > It does not help SysRq keys. Only I can force power off by hold power > > > button. > > > > > > Dmesg: > > > http://mrutecki.pl/download/kernel/3.4-rc1/suspend_resume/dmesg-3.4-rc1.t > > > xt > > > > > > Config: > > > http://mrutecki.pl/download/kernel/3.4-rc1/suspend_resume/config-3.4.0-rc > > > 1 > > > > Likely a known regression, ppgtt support broke hibernate because my code > > doesn't restore the ppgtt page directory correctly in the thaw function. > > > > Patch: > > http://cgit.freedesktop.org/~danvet/drm-intel/commit/?h=drm-intel-fixes&id= > > 55a254ac63a3ac1867d1501030e7fba69c7d4aeb > > > > Please test whether this fixes your issue. You can also try adding > > i915.i915_enable_ppgtt=0 to your kernel cmdline. > > > > Thanks, Daniel > > Patch solves problem. > > Now resume hangs later on another subsystem: wireless :D Woot, I'm off the hook ;-) Thanks for reporting this issue and testing the patch. Yours, Daniel -- Daniel Vetter Mail: daniel@ffwll.ch Mobile: +41 (0)79 365 57 48