From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lukas Hejtmanek Subject: Re: [Bugme-new] [Bug 9995] New: 2.6.25-rc1 regression - IBM ACPI backlight controlls do not work Date: Fri, 15 Feb 2008 23:51:09 +0100 Message-ID: <20080215225109.GE4269@ics.muni.cz> References: <20080215122137.629c612d.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from minas.ics.muni.cz ([147.251.4.40]:50379 "EHLO minas.ics.muni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763871AbYBOWvb (ORCPT ); Fri, 15 Feb 2008 17:51:31 -0500 Content-Disposition: inline In-Reply-To: <20080215122137.629c612d.akpm@linux-foundation.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Andrew Morton Cc: bugme-daemon@bugzilla.kernel.org, Matthew Garrett , Henrique de Moraes Holschuh , linux-acpi@vger.kernel.org On Fri, Feb 15, 2008 at 12:21:37PM -0800, Andrew Morton wrote: > I've lost the plot on what's happening with backlight. I think you'r= e > about to find that this is not-a-bug, even though it stopped working. Why do you think that it is not-a-bug even if it stopped working? I don= 't think it is a feature as acpi video driver should control backlight lev= els on laptop that provides generic ACPI based backlight support which is the = case of ThinkPad T61. Or at least it used to be with up to 2.6.24 kernels. I can read sane values from /sys/class/backlight/acpi_video0/* but chan= ging them has no effect on the backlight. --=20 Luk=E1=B9 Hejtm=E1nek - To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html