Re: [PATCH] thinkpad-acpi: Enable microphone mute LED

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On Fri, May 27, 2011 at 12:28 PM, Matthew Garrett <mjg59@xxxxxxxxxxxxx> wrote:
> On Tue, May 24, 2011 at 03:41:02PM -0400, Andy Lutomirski wrote:
>> I don't know exactly which models have this LED or how to identify
>> them in the quirk table, so I just enabled it for all unquirked
>> Lenovo models.
>
> Is there any chance that this is meant to be controlled via ALSA, in a
> similar way to the mute LED?

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.

--Andy

>
> --
> Matthew Garrett | mjg59@xxxxxxxxxxxxx
>
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