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Date: Sun, 5 Mar 2006 02:42:41 GMT
From: Ariff Abdullah <ariff@FreeBSD.org>
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To: mistral@imasy.or.jp, ariff@FreeBSD.org, freebsd-multimedia@FreeBSD.org
Cc: 
Subject: Re: kern/94056: [ich] [patch] Turn on inverted external amplifier
	sense flags for Sony vaio type T
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Synopsis: [ich] [patch] Turn on inverted external amplifier sense flags for Sony vaio type T

State-Changed-From-To: open->patched
State-Changed-By: ariff
State-Changed-When: Sun Mar 5 02:42:07 UTC 2006
State-Changed-Why: 
Patched. MFC within 3 days.

Take a look at http://people.freebsd.org/~ariff/test/eapd_inv/ , if
you want to try an experimental external amplifier switch (through
sysctl hw.snd.pcm<unit>.ac97_external_amplifier), sort of hardware
mute / unmute. You can use hint.pcm.<unit>.ac97_eapd_inv="1" to set
default inverted flags (which seems unnecessary since you can toggle
it using sysctl).

As I said, it's purely experimental.

Thanks for the patch/submission.

http://www.freebsd.org/cgi/query-pr.cgi?pr=94056