From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751746AbbJDQaZ (ORCPT ); Sun, 4 Oct 2015 12:30:25 -0400 Received: from mout.gmx.net ([212.227.15.15]:54991 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751632AbbJDQaY (ORCPT ); Sun, 4 Oct 2015 12:30:24 -0400 Subject: Re: 4.0.8->4.1.3 : after resume from s2ram both internal and external display of a docked ThinkPad ate black To: Pavel Machek References: <55B8DAF8.6070805@gmx.de> <20150802074334.GG3720@amd> <55C0B038.8090807@gmx.de> Cc: intel-gfx , Linux Kernel , Dave Airlie From: =?UTF-8?Q?Toralf_F=c3=b6rster?= Message-ID: <56115416.7040404@gmx.de> Date: Sun, 4 Oct 2015 18:30:14 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <55C0B038.8090807@gmx.de> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K0:nabWd+W/Rnh24IIoJWL2ushIKh+zk16Dr/TwqqU4zdq/CDL0hT9 f3vOv2ZGU1DMvJexCU7xmFpPcNlXFWAxMReMJLvtZjfGqUyA3oMpgnf96C7E2zhbi/utSA9 fm4vcgAn75gQO2LJxTfAZ4Nv4Pu6X5TKQJR+e1SI/Zrr7PXBIN2Q31g48CoxuSUd93YvAzR 7bPMF3MJx3eZLaOWe/1Fw== X-UI-Out-Filterresults: notjunk:1;V01:K0:aQdhlg16ARk=:HWTABiF7++MPPWW9uRWrFL xb/G4Z865Tt62X0szCcgpGVkY52DLyfmhNNRUwvMNPlzLurmb7j6T+//zQwjYCYIZ3n4Tb4Oy ilxnbxlc/Z7b2WF+1NuXDaUgArfv4ubjd/8S7OuhSO85WuWGieEtlxrR8MrUQOBFl33DTO2Um Oa0+7Baj0dxPw9OlN2cKh6paI2pke8MHHwV/+tP/I08XlnyNJEic8BAX5DyZOYFoeF3oPfqNp lqETAiCbwpKo7jlsHc6sIiK6FZOeLSXz7SBf5gT6sqmvosIrNL7fXX6jT0dL9o5tWcLbs5zUF T2jS/m6tEjPqT6GHEgF6Kei3zLgV6oWq+8HjQm+R581nlr3VZzzBPrmkHxkOQLKKMlT+ZDdNU 5G/1Ob05Ih3u4gMoESRtcjD9gjhKG+vAEh/8WOLHd5pLidDIBWeDyLtvpxu6PVWxffyZu9Mt4 w9G4WxazntmABQLCl/0J7WrnWavADZ/RbFWiQ7bUiKR05jMNt0+ABVPxigvsVYS5mkQjXaUIA BHLZcSQhKVKDfJzbTAzbBLfUX4B77gYufVCN/LPz/cOH3pylM+5D0Lf3PL2pf2KYAFt+PmXlK wO3pKbv7fPdVp//t7oq0x5yHLWwFuQRDewFjb2dhBNrCDwdg1hBfvEerc/GDqrohcvBIzJ9+2 gEFgYpinQsTlXSJs118mfb3isc9GIXR3l7ODjNtq6ul6CWvWBIf/8BDBiRt2n7hLOepbsACG8 Kq0gXWvcbW95ZSWrMObMey8eRTGj+FPJ0A8LAYUZP+mfACS+EVkh9anNNqxGUZbbHNHCpfUZc QIXd4azCsrq3mhqSOf9RnUjXwmDkA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/04/2015 02:29 PM, Toralf Förster wrote: > On 08/02/2015 09:43 AM, Pavel Machek wrote: >> Any chance to bisect it? > Did it. > > FWIW: the mentioned commit was introduced between 3.18 and 3.19. > But my system (hardened 64 bit Gentoo) did not suffer from it till version 4.0.8. > The hardened kernel 4.1.x was the first where the bug was visible at my docked environment too. > > > > commit e7d6f7d708290da1b7c92f533444b042c79412e0 > Author: Dave Airlie > Date: Mon Dec 8 13:23:37 2014 +1000 > > drm/i915: resume MST after reading back hw state > > Otherwise the MST resume paths can hit DPMS paths > which hit state checker paths, which hit WARN_ON, > because the state checker is inconsistent with the > hw. > > This fixes a bunch of WARN_ON's on resume after > undocking. > > Signed-off-by: Dave Airlie > Reviewed-by: Daniel Vetter > Cc: stable@vger.kernel.org > Signed-off-by: Jani Nikula > Is there anything else what I can do ? Current kernels up to 4.2.3 and 4.3-rc3 (not hardened) shows this issue here at my system. -- Toralf, pgp key: 872AE508 0076E94E