Unfortunately I was never able to solve this. It appears the Windows
issue (referenced above) remains as well. Maybe an examination of the
Apple/OSX driver (if that's even possible) would lead to a solution
here.
As a work-around I purchased a small USB sound card and plugged into
that.
--
So it looks as if the bug that generated that commit was due to no sound coming
out of the air's speakers and there's really not much talk about the TRRS
mic-in functionality:
https://bugzilla.kernel.org/show_bug.cgi?id=60811
That commit may be responsible for the working sound and headphone
Sure enough - it would appear the windows driver doesn't support the TRRS mic
on this CS4208 chip either:
https://discussions.apple.com/thread/5862553
So then, OSX's driver for the chip would likely hold the key to this.
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Interesting - that commit does appear to target my machine specifically,
and contains a pin configuration for it:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b5bf0a929d7ca35b9ccfc24647a397899d307659
Oddly, when I upgraded the ALSA driver to the latest as that wiki
Public bug reported:
Hello,
I'm running Ubuntu Gnome 14.04 on a new MacBookAir6,2 with the Cirrus
Logic CS4208 and would love to get the microphone part of the TRRS
connector working. Mac OS picks up and utilizes the TRRS headset mic
without issue so I know the hardware is a go.
With the
Awesome - thank you for the direction on those items! New bug for the
Air 6,2 filed here:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1410618
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** Changed in: alsa-driver (Ubuntu)
Status: Invalid = Confirmed
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https://bugs.launchpad.net/bugs/950494
Title:
[Macbook Air 3,2] headset mic not recognized
Hello,
I'm running Ubuntu Gnome 14.04 on a new MacBookAir6,2 with the Cirrus
Logic CS4208 and would love to get the microphone part of the TRRS
connector working. Mac OS picks up and utilizes the TRRS headset mic
without issue so I know the hardware is a go.
Running sudo hda-jack-sense-test -a
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