Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759939AbZDOMfh (ORCPT ); Wed, 15 Apr 2009 08:35:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755832AbZDOMf1 (ORCPT ); Wed, 15 Apr 2009 08:35:27 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:54120 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753590AbZDOMf0 (ORCPT ); Wed, 15 Apr 2009 08:35:26 -0400 Subject: Re: 2.6.30-rc1 (latest git): thinkpad-acpi: cannot control brightness with hotkeys (BISECTED) From: Peter Zijlstra To: Niel Lambrechts Cc: Zhang Rui , Henrique de Moraes Holschuh , "mjg59@srcf.ucam.org" , "Zhao, Yakui" , Andrew Morton , "linux.kernel" , "linux-acpi@vger.kernel.org" In-Reply-To: <49E58460.1010402@gmail.com> References: <49E10684.5090101@gmail.com> <20090411150555.8b13ed18.akpm@linux-foundation.org> <20090412161448.GC26502@khazad-dum.debian.net> <49E234ED.5010105@gmail.com> <1239585695.5564.5.camel@localhost.localdomain> <49E3575A.60204@gmail.com> <20090413203450.GC16152@khazad-dum.debian.net> <49E5234E.5070303@gmail.com> <1239760242.7661.305.camel@rzhang-dt> <49E58460.1010402@gmail.com> Content-Type: text/plain Date: Wed, 15 Apr 2009 14:35:15 +0200 Message-Id: <1239798915.22720.2344.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.26.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1732 Lines: 48 On Wed, 2009-04-15 at 08:53 +0200, Niel Lambrechts wrote: > On 04/15/2009 03:50 AM, Zhang Rui wrote: > > On Wed, 2009-04-15 at 07:59 +0800, Niel Lambrechts wrote: > > > >> On 04/13/2009 10:34 PM, Henrique de Moraes Holschuh wrote: > >> > >>> On Mon, 13 Apr 2009, Niel Lambrechts wrote: > >>> > >>> > >>>>>> In 2.6.29.1: > >>>>>> lrwxrwxrwx 1 root root 0 Apr 12 20:01 /sys/class/backlight/acpi_video0 > >>>>>> -> ../../devices/virtual/backlight/acpi_video0 > >>>>>> > >>>>>> > >>> Well, that at least confirms that thinkpad-acpi doesn't have anything to > >>> do with your troubles, you were using acpi video. > >>> > >>> > >> Okay, I've bisected it to: > >> > >> 74a365b3f354fafc537efa5867deb7a9fadbfe27 is first bad commit > >> commit 74a365b3f354fafc537efa5867deb7a9fadbfe27 > >> Author: Matthew Garrett > >> Date: Thu Mar 19 21:35:39 2009 +0000 > >> > >> ACPI: Populate DIDL before registering ACPI video device on Intel > >> > >> > > > > please set CONFIG_DRM_I915_KMS, reload the ACPI video driver after > > loading i915 and see if it helps. > > > In all the kernels I've tried (up to 2.6.30-rc2), I get issues with KMS: > > I boot with 'modeset=1 i915=1', console login is okay and 'modprobe i915 > modeset=1' seems to work - the console resolution changes (very small > 1920x1200). Hehe, at least you get something, I consistently get a black screen whenever KMS gets enabled in a config. -- 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/