From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932497Ab1AKRhp (ORCPT ); Tue, 11 Jan 2011 12:37:45 -0500 Received: from cantor2.suse.de ([195.135.220.15]:37728 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753368Ab1AKRhn (ORCPT ); Tue, 11 Jan 2011 12:37:43 -0500 Date: Tue, 11 Jan 2011 18:37:41 +0100 From: Michal Hocko To: Linus Torvalds Cc: Linux Kernel Mailing List , Chris Wilson , dri-devel@lists.freedesktop.org, indan@nul.nu Subject: Re: Linux 2.6.37 Message-ID: <20110111173741.GA3988@tiehlicka.suse.cz> References: <20110106104816.GA4026@tiehlicka.suse.cz> <20110111171744.GA3854@tiehlicka.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110111171744.GA3854@tiehlicka.suse.cz> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue 11-01-11 18:17:44, Michal Hocko wrote: > [Let's CC Indan - author of the bugzilla patches] > > On Thu 06-01-11 11:48:16, Michal Hocko wrote: > > Hi, > > > > On Tue 04-01-11 17:15:45, Linus Torvalds wrote: > > [...] > > > We did have another revert to fix hopefullythe last "blank screen" > > > regression on intel graphics. > > > > It seems that there is still a regression for intel graphic cards > > backlight. One report is https://bugzilla.kernel.org/show_bug.cgi?id=22672. > > I can reproduce the problem easily by: > > xset dpms force standby; sleep 3s; xset dpms force on > > > > backlight doesn't get up (there is really dark picture though which > > doesn't get brighter by function keys which work normally) after dpms on > > until I close and open lid. > > > > The problem wasn't present in 2.6.36 > > I can confirm that this problem is not present if both patches from > bko#22672 are applied on top of 2.6.37 kernel. > I haven't tried both patches separately, but I can surely try it if it > makes any sense. I have just tried that and they are really both necessary. -- Michal Hocko L3 team SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic