Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753654AbaFXM1p (ORCPT ); Tue, 24 Jun 2014 08:27:45 -0400 Received: from mail.fireflyinternet.com ([87.106.93.118]:52581 "EHLO fireflyinternet.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752186AbaFXM1m (ORCPT ); Tue, 24 Jun 2014 08:27:42 -0400 X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Date: Tue, 24 Jun 2014 13:27:37 +0100 From: Chris Wilson To: Thomas Meyer Cc: Jani Nikula , Linus Torvalds , "intel-gfx@lists.freedesktop.org" , Linux Kernel Mailing List Subject: Re: [Intel-gfx] Linux 3.16-rc2 Message-ID: <20140624122737.GF17674@nuc-i3427.alporthouse.com> Mail-Followup-To: Chris Wilson , Thomas Meyer , Jani Nikula , Linus Torvalds , "intel-gfx@lists.freedesktop.org" , Linux Kernel Mailing List References: <1403564870.3091.6.camel@localhost.localdomain> <871tuea7nz.fsf@intel.com> <20140624115753.GD17674@nuc-i3427.alporthouse.com> <1403612670.3091.10.camel@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1403612670.3091.10.camel@localhost.localdomain> 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 Tue, Jun 24, 2014 at 02:24:30PM +0200, Thomas Meyer wrote: > 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) ? Because that patch was in response to a boot time regression. -Chris -- Chris Wilson, Intel Open Source Technology Centre -- 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/