Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754087Ab0LAIJA (ORCPT ); Wed, 1 Dec 2010 03:09:00 -0500 Received: from minas.ics.muni.cz ([147.251.4.40]:49604 "EHLO minas.ics.muni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750735Ab0LAII7 (ORCPT ); Wed, 1 Dec 2010 03:08:59 -0500 Date: Wed, 1 Dec 2010 09:08:50 +0100 From: Lukas Hejtmanek To: Calvin Walton Cc: linux-kernel@vger.kernel.org Subject: Re: [Regression] 2.6.37-rc1: Lenovo T61 mute button does not work Message-ID: <20101201080850.GK10354@ics.muni.cz> References: <20101130185303.GI10354@ics.muni.cz> <1291172324.14274.33.camel@nayuki> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1291172324.14274.33.camel@nayuki> X-echelon: NSA, CIA, CI5, MI5, FBI, KGB, BIS, Plutonium, Bin Laden, bomb User-Agent: Mutt/1.5.20 (2009-06-14) X-Muni-Spam-TestIP: 94.112.253.31 X-Muni-Envelope-From: xhejtman@anubis.ics.muni.cz X-Muni-Virus-Test: Clean X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-3.0 (minas.ics.muni.cz [147.251.4.35]); Wed, 01 Dec 2010 09:08:57 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1132 Lines: 27 On Tue, Nov 30, 2010 at 09:58:44PM -0500, Calvin Walton wrote: > The mute button on this series of Thinkpads is a little weird (I have an > R61i, which is the same iirc) - the behaviour of the button depends on > the ACPI firmware. With no operating system running, it behaves as a > persistent hardware mute. Windows apparently uses a proprietary driver > to control the volume - part of this functionality has been added to the > Linux thinkpad_acpi driver, but it's not fully enabled yet. Behaviour in 2.6.36 kernel is OK as expected. Something broken it in 2.6.37-rc1. > Search your dmesg for lines containing '_OSI(Linux)' - it should say > that a BIOS query was honoured. Make sure you do not have 'acpi_osi="! > Linux"' on your kernel command line. [ 0.000000] ACPI: DMI detected: Lenovo ThinkPad T61 [ 0.000000] ACPI: Added _OSI(Linux) looks good. -- Luk?? Hejtm?nek -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/