From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751841Ab2LSWKg (ORCPT ); Wed, 19 Dec 2012 17:10:36 -0500 Received: from mx.scalarmail.ca ([98.158.95.75]:46462 "EHLO ironport-01.sms.scalar.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751742Ab2LSWKa (ORCPT ); Wed, 19 Dec 2012 17:10:30 -0500 Date: Wed, 19 Dec 2012 17:10:29 -0500 (EST) From: Tom St Denis To: Fabio Coatti Cc: linux-kernel@vger.kernel.org Message-ID: <1520620637.200975.1355955029721.JavaMail.root@elliptictech.com> In-Reply-To: Subject: Re: 3.7.X vs 3.6.11 HP Folio 9470m brightness regression? 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 ----- Original Message ----- > From: "Fabio Coatti" > To: linux-kernel@vger.kernel.org > Sent: Wednesday, 19 December, 2012 5:01:30 PM > Subject: 3.7.X vs 3.6.11 HP Folio 9470m brightness regression? > > Hi, > I'm testing kernels 3.7.X vs 3.6.11 on an HP Folio 9470m machine, > i915 > driver for a VGA compatible controller: Intel Corporation 3rd Gen > Core > processor Graphics Controller (rev 09) 8086:0166 > > With 3.6.11, the brightness can be correctly set using fn+f9/10: kde > shows the bar and brightness changes. > > With 3.7.1 kde shows the percentage bar and > /sys/class/backlight/acpi_video0/brightness is updated, but the > screen > brightness does not changes. I had a similar problem with my Dell laptop and i915/acpi... Is there another acpi_video? device? In my case two showed up in 3.7 whereas in 3.6 there was one. In 3.7 it was controlling the wrong one apparently. Tom St Denis