Hi Nicolo,

>  A nice proposal would be to compile the latest linux kernel and run 
> hda-jack-retask to try to set the configuration right (in the 
> case of Realtek codec, the missing things I'm supposed to check are either 
> some vendor-specific COEF verbs, EAPD or GPIO 
> setup.)

* hda-jack-retask: 
I have hda-jack-retask for Raring now compiled in my ppa:diwic/hda,

* latest drivers:
The latest drivers can be checked with 
https://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS

 * vendor-specific COEF verbs
Only Realtek knows about these verbs unfortunately.

 * EAPD or GPIO setup
It is possible you can use hda-analyzer (available in snd-hda-tools in my 
ppa:diwic/hda ) for turning on/off EAPD. Not sure about GPIO. It's unusual for 
Realtek to use GPIO though. Anyway, hda-analyzer has been a bit unstable 
lately, so then you would resort to hda-verb (also in snd-hda-tools) and a copy 
of the HDA specification. You would look at the codec proc file ( 
/proc/asound/cardX/codecY ) to verify if the value you tried to set is the 
current value of EAPD/GPIO.

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https://bugs.launchpad.net/bugs/1170837

Title:
  apple macbookair1,1 microphones not working

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