[alsa-devel] HDA intel, wired headset w/mic, jack mic detect

Mark Brown broonie at opensource.wolfsonmicro.com
Wed Feb 29 16:26:25 CET 2012

On Wed, Feb 29, 2012 at 11:05:25PM +0800, Raymond Yau wrote:

> Does your headset/mic has a TRRS (Tip, ring, ring, sleeve) connector
> instead of TRS (Tip, ring, sleeve) connector ?

> You can use David's hda-jack-sense-test to find out any jack sense at
> the node of External mic when you plug the headset , if not , you may
> need to modify unsol event of  headphone to select the external mic ,
> internal mic.

Given that this is a MacBook Air it'll be the Apple pinout with ground
on pin 3; any Apple headset and most third party ones ought to be happy.

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