From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753921Ab2LBNtg (ORCPT ); Sun, 2 Dec 2012 08:49:36 -0500 Received: from mx.scalarmail.ca ([98.158.95.75]:64909 "EHLO ironport-01.sms.scalar.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751673Ab2LBNte (ORCPT ); Sun, 2 Dec 2012 08:49:34 -0500 Date: Sun, 2 Dec 2012 08:49:33 -0500 (EST) From: Tom St Denis To: Daniel Vetter Cc: linux-kernel@vger.kernel.org, intel-gfx , dri-devel Message-ID: <1738269086.121732.1354456173261.JavaMail.root@elliptictech.com> In-Reply-To: Subject: Re: Brightness control fails between 3.6.8 and 3.7.0-rc7 (Intel 915/Dell Vostro 3560) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [172.17.19.112] X-Mailer: Zimbra 7.2.1_GA_2790 (ZimbraWebClient - GC23 (Linux)/7.2.1_GA_2790) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ok so on v3.7-rc1 [and I suspect up] I can manually control the brightness by echoing to /sys/class/backlight/intel_backlight/brightness But I still can't use the buttons to control it (it only goes one tick down from max and stops there). I'm using GNOME3 from a x86_64 unstable debian install [up to date with latest]. I just noticed that under v3.7 I have a new directory /sys/class/backlight/acpi_video1 which is what GNOME is actually controlling. I can't disable ACPI video control so is there a workaround? Tom ----- Original Message ----- > From: "Daniel Vetter" > To: "Tom St Denis" > Cc: linux-kernel@vger.kernel.org, "intel-gfx" , "dri-devel" > > Sent: Sunday, 2 December, 2012 6:43:14 AM > Subject: Re: Brightness control fails between 3.6.8 and 3.7.0-rc7 (Intel 915/Dell Vostro 3560) > > Including a bunch more lists to the cc. > > On Sun, Dec 2, 2012 at 12:42 PM, Daniel Vetter > wrote: > > On Sun, Dec 2, 2012 at 12:32 PM, Tom St Denis > > wrote: > >> I've narrowed it down to sometime between v3.6.8 and v3.7-rc1. So > >> none of the v3.7 series will work with this GPU/panel. > > > > Hm, that's still a few hundred relevant commits intermingled with a > > few thousand that likely don't matter ;-) Can you please attempt a > > kernel bisect with git? For a nice howto check out > > http://www.reactivated.net/weblog/archives/2006/01/using-git-bisect-to-find-buggy-kernel-patches/ > > > > Also, can you please check which of the different backlight > > controls > > in /sys/class/backlight work on 3.6 (and whether any of them still > > work on 3.7)? > > > > Thanks, Daniel > > -- > > Daniel Vetter > > Software Engineer, Intel Corporation > > +41 (0) 79 365 57 48 - http://blog.ffwll.ch > > > > -- > Daniel Vetter > Software Engineer, Intel Corporation > +41 (0) 79 365 57 48 - http://blog.ffwll.ch >