[alsa-devel] [PATCH] ALSA: hda: Add speaker pin to automute Acer Aspire 8943G

[Raymond Yau]

2010/10/14 Valentine Sinitsyn <valentine.sinitsyn at gmail.com>

> Hi David,
>
> First of all, thank you for your work on subwoofer issues. I've had a
> chance to test them on my system lately, and they do really fix the bug
> reported, but another one (more serious, in my opinion) remains:
> subwoofer is not muted via normal mute button (more precisely, by muting
> Master ALSA mixer). The problem is that during autoconfiguration
> procedure, subwoofer is mapped on PCM channel, and there seems (at least
> to me) to be no reliable way to distinguish subwoofer from other
> possibly existing outputs on a general system and change this behavior.
> Creating dedicated presets for the machines with a subwoofer seems to be
> right way to workaround this, but then _quirks you've implemented should
> be merged with this preset.
>
> Does this sound reasonable to you or I am missing anything?
>
> Thanks.
>

Do you mean that you want to add that "subwoofer" control which is connected
the the master mono pin of the codec  to the slave controls of the virtual
master volume control ?