From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: Re: brightness control on thinkpad t61p Date: Mon, 24 Dec 2007 07:34:06 +0000 Message-ID: <20071224073406.GA1018@srcf.ucam.org> References: <20071223000057.739d5891.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from cavan.codon.org.uk ([78.32.9.130]:32778 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751550AbXLXHeV (ORCPT ); Mon, 24 Dec 2007 02:34:21 -0500 Content-Disposition: inline In-Reply-To: <20071223000057.739d5891.akpm@linux-foundation.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Andrew Morton Cc: linux-acpi@vger.kernel.org, Henrique de Moraes Holschuh , "Rafael J. Wysocki" 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. -- Matthew Garrett | mjg59@srcf.ucam.org