From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754116Ab3B1BOO (ORCPT ); Wed, 27 Feb 2013 20:14:14 -0500 Received: from mail-oa0-f47.google.com ([209.85.219.47]:44079 "EHLO mail-oa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751541Ab3B1BON (ORCPT ); Wed, 27 Feb 2013 20:14:13 -0500 MIME-Version: 1.0 In-Reply-To: References: Date: Wed, 27 Feb 2013 20:14:12 -0500 Message-ID: Subject: Re: [git pull] drm merge for 3.9-rc1 From: Josh Boyer To: Dave Airlie , Alex Deucher , Jerome Glisse Cc: torvalds@linux-foundation.org, DRI mailing list , linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 27, 2013 at 7:01 PM, Josh Boyer wrote: > On Wed, Feb 27, 2013 at 3:20 PM, Josh Boyer wrote: >> On Wed, Feb 27, 2013 at 11:34 AM, Josh Boyer wrote: >>> On Mon, Feb 25, 2013 at 7:05 PM, Dave Airlie wrote: >>>> Alex Deucher (29): >>>> drm/radeon: halt engines before disabling MC (6xx/7xx) >>>> drm/radeon: halt engines before disabling MC (evergreen) >>>> drm/radeon: halt engines before disabling MC (cayman/TN) >>>> drm/radeon: halt engines before disabling MC (si) >>>> drm/radeon: use the reset mask to determine if rings are hung >>> >>> Something in this series of commits is causing the GPU to hang on reboot >>> on my Dell XPS 8300 machine. That has a: >>> >>> 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee >>> ATI Caicos [Radeon HD 6450] >>> >>> card in it. After reboots, I get a screen that looks like this: >>> >>> http://t.co/tPnT6xQZUK >>> >>> I can hit it fairly consistently after a few reboots, so I tried doing a >>> git bisect on the radeon driver and it came down to: >>> >>> ca57802e521de54341efc8a56f70571f79ffac72 is the first bad commit >> >> So I don't think that's actually the cause of the problem. Or at least >> not that alone. I reverted it on top of Linus' latest tree and I still >> get the lockups. > > Actually, git bisect does seem to have gotten it correct. Once I > actually tested the revert of just that on top of Linus' tree (commit > d895cb1af1), things seem to be working much better. I've rebooted a > dozen times without a lockup. The most I've seen it take on a kernel > with that commit included is 3 reboots, so that's definitely at least an > improvement. I give up. GPU issues are not my thing. 2 reboots after I sent that it gave me pretty rainbow static again. So it might have been an improvement, but revert it is not a solution. Looking at there rest of the commits, the whole GPU rework might be suspect, but I clearly have no clue. josh