[pulseaudio-discuss] [PATCH] alsa-mixer: Don't let "Mic Jack Mode" alone create a "Line In" path

[Tanu Kaskinen]

On Wed, 2012-10-17 at 14:55 +0200, David Henningsson wrote:
> Yes, setting "Mic Jack Mode" to "Line" would turn of the VREF pin of the 
> codec, i e, the phantom power to the microphone. In "Mic" mode there's 
> usually a phantom power of 80% of Vdd. (I have never actually measured 
> this - I'm just looking at the HDA spec.)
> 
> So my argument is more about confusion ("Hey, PulseAudio says I've got a 
> line in port, but I don't have one, let's file a bug!").

Which scenario do you mean:

1) The user complains, because he sees a line-in port even though
nothing is plugged in

or 

2) The user complains, because he sees a line-in port even though the
the connector has only a mic symbol, and not a combined mic & line-in
symbol?

If you mean scenario 1, do you agree that having two ports would be
better, if both get marked unavailable when nothing is plugged in? (It's
probably not so easy to write the code to implement that, and if I had
to choose between the one-port solution and no solution at all, I'd
choose the one-port solution.)

-- 
Tanu