From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756225Ab1AKRTV (ORCPT ); Tue, 11 Jan 2011 12:19:21 -0500 Received: from cantor.suse.de ([195.135.220.2]:45754 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751542Ab1AKRTT (ORCPT ); Tue, 11 Jan 2011 12:19:19 -0500 Date: Tue, 11 Jan 2011 18:19:17 +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: <20110111171744.GA3854@tiehlicka.suse.cz> References: <20110106104816.GA4026@tiehlicka.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110106104816.GA4026@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 [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. > > $ lspci -vv > [...] > 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) (prog-if 00 [VGA controller]) > Subsystem: Fujitsu Limited. Device 137a > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- > Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- SERR- Latency: 0 > Interrupt: pin A routed to IRQ 16 > Region 0: Memory at f0300000 (32-bit, non-prefetchable) [size=512K] > Region 1: I/O ports at 1800 [size=8] > Region 2: Memory at e0000000 (32-bit, prefetchable) [size=256M] > Region 3: Memory at f0400000 (32-bit, non-prefetchable) [size=256K] > Expansion ROM at [disabled] > Capabilities: > Kernel driver in use: i915 [...] -- Michal Hocko L3 team SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic