[alsa-devel] No sound with Sony VAIO VPCZ1 (ALC889)

[Takashi Iwai]

At Tue, 09 Jul 2013 11:53:47 -0700,
Adam Williamson wrote:
> 
> On 2013-07-08 10:48, Takashi Iwai wrote:
> 
> >> Ah, yes, I'd forgotten about that little wrinkle. I don't pretend to 
> >> be
> >> following the exact details of the planned fix here, but just as a
> >> high-level remark, this 'extra mic jack' seems very much like an
> >> implementation detail for the noise cancellation which Linux does not 
> >> do
> >> in any case (AFAIK). It wouldn't make sense to me to expose it as a
> >> 'normal' mic jack, exactly. It's not like you can plug an actual
> >> microphone into this 'mic jack' and use it. How will it be exposed
> >> exactly after the patch, tiwai?
> > 
> > Well, Tormen's description sounds like it being a mic for a headset,
> > no?
> 
> No, at least IIRC - the special headphones that come with the system 
> aren't for voice calling or whatever, they're active noise cancelling 
> earphones. 
> http://forum.notebookreview.com/sony/501220-sony-noise-cancelling-ear-phones-came-vaio-z-3.html is a thread about them, for e.g.

OK, then it's not suitable to handle it as a headset.
I expected it being rather a standard TRRS connector.


Takashi

> 
> > If so, it's not for a noise canceling, and we can expose the jack
> > and the control of the secondary mic simply as "Headset Mic".
> > In anyway, this will be a separate fix.
> 
> -- 
> Adam Williamson
> Fedora QA Community Monkey
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