From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: brightness control on thinkpad t61p Date: Wed, 26 Dec 2007 14:10:27 -0800 Message-ID: <20071226141027.6d1a509f.akpm@linux-foundation.org> References: <20071223000057.739d5891.akpm@linux-foundation.org> <20071224073406.GA1018@srcf.ucam.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from smtp2.linux-foundation.org ([207.189.120.14]:57502 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751590AbXLZWLR (ORCPT ); Wed, 26 Dec 2007 17:11:17 -0500 In-Reply-To: <20071224073406.GA1018@srcf.ucam.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Matthew Garrett Cc: linux-acpi@vger.kernel.org, Henrique de Moraes Holschuh , "Rafael J. Wysocki" On Mon, 24 Dec 2007 07:34:06 +0000 Matthew Garrett wrote: > On Sun, Dec 23, 2007 at 12:00:57AM -0800, Andrew Morton wrote: > > > and /sys/class/backlight/thinkpad_screen/brightness is no longer present, so > > my `brightness' script no longer works. That, my friends, is a regression. > > The thinkpad_acpi brightness interface simply doesn't work correctly on > recent Thinkpads. The ACPI interface does, but the currently exported ui > to it approximates some sort of horrific loss. I'll try to fix that in > the next week or so. Vice versa for me. The thinkpad_acpi driver in 2.6.23 _does_ work, but its interface vanished in 2.6.24-rc5 and the acpi driver does not work.