From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756033AbZBPBQV (ORCPT ); Sun, 15 Feb 2009 20:16:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754749AbZBPBQK (ORCPT ); Sun, 15 Feb 2009 20:16:10 -0500 Received: from cavan.codon.org.uk ([93.93.128.6]:45439 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754216AbZBPBQI (ORCPT ); Sun, 15 Feb 2009 20:16:08 -0500 Date: Mon, 16 Feb 2009 01:16:00 +0000 From: Matthew Garrett To: "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Andi Kleen , Len Brown , Thomas Renninger , Zhang Rui Subject: Re: [Bug #12401] 2.6.28 regression: xbacklight broken on ThinkPad X61s Message-ID: <20090216011600.GA28929@srcf.ucam.org> References: <20090215134409.GC21670@srcf.ucam.org> <200902151538.29766.rjw@sisk.pl> <20090215221647.GA15392@dose.home.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090215221647.GA15392@dose.home.local> User-Agent: Mutt/1.5.12-2006-07-14 X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@codon.org.uk X-SA-Exim-Scanned: No (on vavatch.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Feb 15, 2009 at 11:16:47PM +0100, Tino Keitel wrote: > I think if it works without DRI in 2.6.27 and doesn't work in 2.6.28, > it isn't a configuration error, but a real regression. It only worked by accident without DRM support, since you were using the ATI codepath in the firmware rather than the Intel one. That bug's been fixed, so now you're following the Intel codepath - unfortunately there's no way to do that without kernel-level graphics support, which means DRM. -- Matthew Garrett | mjg59@srcf.ucam.org