From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: Re: [PATCH] thinkpad-acpi: Enable microphone mute LED Date: Fri, 27 May 2011 17:48:55 +0100 Message-ID: <20110527164855.GA17443@srcf.ucam.org> References: <8dc2b2140c2794291811cd38f51f9dc7596f482c.1306266017.git.luto@mit.edu> <20110527162844.GA16769@srcf.ucam.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from cavan.codon.org.uk ([93.93.128.6]:56045 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754433Ab1E0QtG (ORCPT ); Fri, 27 May 2011 12:49:06 -0400 Content-Disposition: inline In-Reply-To: Sender: platform-driver-x86-owner@vger.kernel.org List-ID: To: Andrew Lutomirski Cc: Henrique de Moraes Holschuh , ibm-acpi-devel@lists.sourceforge.net, platform-driver-x86@vger.kernel.org On Fri, May 27, 2011 at 12:39:10PM -0400, Andrew Lutomirski wrote: > I don't have docs so I don't really know. But the mute LED does not > appear to be controllable from the LED interface and when mute is lit > there's no sound regardless of what ALSA thinks. When I light the > micmute light, I can still record sound just fine. > > The mic mute button does nothing on Windows unless the special driver > is installed, and that driver seems to mute the Windows mixer, so I > think there's nothing special other than a little userspace helper > going on. Hm. That makes things kind of tricky. While it's easy to just expose the LED, really we want to do it in such a way that userspace knows which LEDs it should be toggling while setting the microphone mute. -- Matthew Garrett | mjg59@srcf.ucam.org