From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751956AbaENTny (ORCPT ); Wed, 14 May 2014 15:43:54 -0400 Received: from mail-ob0-f176.google.com ([209.85.214.176]:64257 "EHLO mail-ob0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751453AbaENTnx convert rfc822-to-8bit (ORCPT ); Wed, 14 May 2014 15:43:53 -0400 MIME-Version: 1.0 In-Reply-To: <20140514193339.GA18197@kroah.com> References: <20140512031029.GA18875@psychosnugglebunnies.net> <20140514204738.60a2f49c@neptune.home> <20140514193339.GA18197@kroah.com> Date: Wed, 14 May 2014 15:43:53 -0400 X-Google-Sender-Auth: mxRPCofnkB3mKDMmYXkjka6TZog Message-ID: Subject: Re: [Intel-gfx] 3.14.3 i915 dead display under X11 From: Josh Boyer To: Greg KH Cc: Daniel Vetter , =?ISO-8859-1?Q?Bruno_Pr=E9mont?= , Carbonated Beverage , Intel Graphics Development , Linux Kernel Mailing List Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 14, 2014 at 3:33 PM, Greg KH wrote: > On Wed, May 14, 2014 at 09:19:32PM +0200, Daniel Vetter wrote: >> On Wed, May 14, 2014 at 08:47:38PM +0200, Bruno Prémont wrote: >> > CCing intel-gfx as otherwise it will probably not get seen by developers. >> > >> > On Sun, 11 May 2014 Carbonated Beverage wrote: >> > > Bisecting from 3.13.6 (good) to 3.14.3 (bad) ended up with... >> > > >> > > commit b35684b8fa94e04f55fd38bf672b737741d2f9e2 >> > > Author: Jani Nikula >> > > Date: Thu Nov 14 12:13:41 2013 +0200 >> > > >> > > drm/i915: do full backlight setup at enable time >> > > >> > > We should now have all the information we need to do a full >> > > initialization of the backlight registers. >> > > >> > > v2: Keep QUIRK_NO_PCH_PWM_ENABLE for now (Imre). >> > > >> > > Signed-off-by: Jani Nikula >> > > Reviewed-by: Imre Deak >> > > Signed-off-by: Daniel Vetter >> > > >> > > Which is in 3.12.0???? >> > > >> > > I'm not sure how that came to be. Does that look right? What other >> > > information would be required to track this down? >> >> We've killed this again in 3.14 since we've hoped the backlight rework in >> there fixed it. For 3.15 we finally have the right fix - vbt has a bit >> telling us not to look at the integrated PWM for the panel. >> >> For 3.14 we will (again) resurrect the quirk because the vbt thing is a >> bit too risky an imo needs a full -rc cycle for testing. But that revert >> is currently stalled because Greg KH is travelling too much ;-) >> >> Cc'ing him to make sure that patch doesn't miss the next 3.14.x release. > > What specific patch are you wanting to make sure makes it in? I've been Subject: [PATCH for stable 3.14 only 0/1] drm/i915: restore QUIRK_NO_PCH_PWM_ENABLE > avoiding all of the drm patches so far for 3.14.y as it's an easy thing > to do, but I'll eventually have to start paying attention to them :) Jani has bugged you twice about it I think. You've said it's not lost both times. Third time is a charm? josh