From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965573AbXCBU3g (ORCPT ); Fri, 2 Mar 2007 15:29:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965574AbXCBU3g (ORCPT ); Fri, 2 Mar 2007 15:29:36 -0500 Received: from smtp.osdl.org ([65.172.181.24]:40512 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965573AbXCBU3f (ORCPT ); Fri, 2 Mar 2007 15:29:35 -0500 Date: Fri, 2 Mar 2007 12:29:20 -0800 From: Andrew Morton To: Alex Romosan Cc: linux-kernel@vger.kernel.org, linux-fbdev-devel@lists.sourceforge.net, Richard Purdie Subject: Re: 2.6.21-rc2 radeon backlight Message-Id: <20070302122920.a2967ebf.akpm@linux-foundation.org> In-Reply-To: <87tzx35zkc.fsf@sycorax.lbl.gov> References: <87ps7uutsk.fsf@sycorax.lbl.gov> <20070301184531.b3aeafe3.akpm@linux-foundation.org> <87tzx35zkc.fsf@sycorax.lbl.gov> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.6; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 02 Mar 2007 09:24:03 -0800 Alex Romosan wrote: > Andrew Morton writes: > > > On Wed, 28 Feb 2007 08:32:43 -0800 > > Alex Romosan wrote: > > > >> the backlight on my thinkpad still (2.6.20 worked fine) doesn't come > >> on if i have the radeon backlight enabled. without it, i guess it's > >> the ibm acpi modules that controls the backlight and it seems to work > >> fine. > >> > > > > Unclear. Are you saying that the backlight comes on OK if you use > > the IBM acpi module? > > yes, if i disable the radeon backlight and use the ibm acpi module, > than the backlight works. if i enable the radeon backlight, the screen > stays dark and i can't turn it on (i tried using radeontool to control > it but nothing happened). Richard, is this actually a bug, or is it a config error or something like that? And should we track it as a post-2.6.20 regression?