From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760013AbZCZRdr (ORCPT ); Thu, 26 Mar 2009 13:33:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754345AbZCZRdi (ORCPT ); Thu, 26 Mar 2009 13:33:38 -0400 Received: from mail-ew0-f165.google.com ([209.85.219.165]:45538 "EHLO mail-ew0-f165.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756014AbZCZRdi (ORCPT ); Thu, 26 Mar 2009 13:33:38 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; b=mydJrtxLxtviy7/ZQbeNEZbGAGLYDH9SkbLDHqNTBZ7AF6KHN1SLqhUGS29tZ0GVdK W+bYXXM17XTTZ//g32FzNsaEYao29XkhwljLq7ollmwgxGj+9Jah0ba4dIEq87mt//Ws O4Bo9WFvflY0XnCw04V3QELumgdJ3Qmgk7gmQ= Message-ID: <49CBBD78.70200@gmail.com> Date: Thu, 26 Mar 2009 22:38:00 +0500 From: "Sergey I. Sharybin" User-Agent: Thunderbird 2.0.0.12 (X11/20080213) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Backlight brightness on linux kernel 2.6.28 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I'm using Debian GNU/Linux (Lenny) on my notebook (model HP 6720s) and since linux kernel version 2.6.28 there is a trouble with backlight brightness: after notebook has been just booted brightess is easily controlled by hotkeys, but if the external power state is changed (plugged or unplugged) there is no more way to control the brightess of backlight until the system reboot. There is the same trouble under kernel version 2.6.29. And there is no such problems with kernel version <= 2.6.27. Is it trouble of kernel or software problem in my Debian system and what can be done with it? -- With best regards, Sergey I. Sharybin