Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753577AbaFXMYe (ORCPT ); Tue, 24 Jun 2014 08:24:34 -0400 Received: from www17.your-server.de ([213.133.104.17]:46347 "EHLO www17.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751821AbaFXMYd (ORCPT ); Tue, 24 Jun 2014 08:24:33 -0400 Message-ID: <1403612670.3091.10.camel@localhost.localdomain> Subject: Re: [Intel-gfx] Linux 3.16-rc2 From: Thomas Meyer To: Chris Wilson Cc: Jani Nikula , Linus Torvalds , "intel-gfx@lists.freedesktop.org" , Linux Kernel Mailing List Date: Tue, 24 Jun 2014 14:24:30 +0200 In-Reply-To: <20140624115753.GD17674@nuc-i3427.alporthouse.com> References: <1403564870.3091.6.camel@localhost.localdomain> <871tuea7nz.fsf@intel.com> <20140624115753.GD17674@nuc-i3427.alporthouse.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4 (3.10.4-2.fc20) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Authenticated-Sender: thomas@m3y3r.de Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Dienstag, den 24.06.2014, 12:57 +0100 schrieb Chris Wilson: > On Tue, Jun 24, 2014 at 02:06:24PM +0300, Jani Nikula wrote: > > On Tue, 24 Jun 2014, Thomas Meyer wrote: > > > the i915 driver is still broken in 3.16-rc2. Resume from ram crashes the > > > X server. > > > > This is not new to 3.16-rc2; apparently we've had it since v3.15-rc4 > > [1]. Also related [2]. > > > > Chris, any fresh ideas? > > Nope. The bug is https://bugs.freedesktop.org/show_bug.cgi?id=76554 > everything we know and have tried is there. Which is not much more than > at time of the original incarnation: > > commit 50aa253d820ad4577e2231202f2c8fd89f9dc4e6 > Author: Keith Packard > Date: Tue Oct 14 17:20:35 2008 -0700 > > i915: Fix up ring initialization to cover G45 oddities > > G45 appears quite sensitive to ring initialization register writes, > sometimes leaving the HEAD register with the START register contents. Check > to make sure HEAD is reset correctly when START is written, and fix it up, > screaming loudly. > -Chris > Hi, so why not revert 78f2975eec9faff353a6194e854d3d39907bab68 (drm/i915: Move all ring resets before setting the HWS page) ? Without this commit 3.15 is super stable for me. This seems to be also true for others according to above bug report. thomas -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/