Fix no sound issues for ASUS W6F (ALC861) laptops (buggy BIOS config that deserves its own internet memes). The trick is to force all available, unused pins (that being advertised as "speaker") to behave as microphone pins instead.
Fix no sound issues for ASUS W6F (ALC861) laptops (buggy BIOS config that
deserves its own internet memes). The trick is to force all available,
unused pins (that being advertised as "speaker") to behave as microphone
pins instead.

Reported / Tested by:	Dmitry Kutsenko <kutsenko.truebsd.org>
MFC after:		3 days

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