From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753661Ab2LAXty (ORCPT ); Sat, 1 Dec 2012 18:49:54 -0500 Received: from mx.scalarmail.ca ([98.158.95.75]:47623 "EHLO ironport-01.sms.scalar.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753464Ab2LAXtx (ORCPT ); Sat, 1 Dec 2012 18:49:53 -0500 Date: Sat, 1 Dec 2012 18:49:51 -0500 (EST) From: Tom St Denis To: linux-kernel@vger.kernel.org Cc: daniel.vetter@ffwll.ch, mjg59@srcf.ucam.org Message-ID: <1328143975.121508.1354405791738.JavaMail.root@elliptictech.com> In-Reply-To: <268628838.121506.1354405604521.JavaMail.root@elliptictech.com> Subject: 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 - FF3.0 (Linux)/7.2.1_GA_2790) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello all, Somewhere between v3.6.8 [vanilla] and 3.7.0-rc7 the ability to control the LCD brightness was broken on this laptop [details below]. Basically it locks the brightness as full brightness and cannot be changed. It works properly in v3.6.8 though [and below...]. Details: 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device 056e Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at c3000000 (64-bit, non-prefetchable) [size=4M] Memory at b0000000 (64-bit, prefetchable) [size=256M] I/O ports at 5000 [size=64] Expansion ROM at [disabled] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: i915 This is on a Dell Vostro 3560/0C05GV I have the discrete radeon turned off [via vgaswitcheroo]. I have dell_wmi and dell_laptop loaded. I use the same kernel config between the two builds. Tom