Hi David,
as you suggested to me in the past, I tried the last drivers, but without 
success.
Yesterday I compiled 3.8.8 and tried hda-jack-retask, but without succes: maybe 
here I'm doing something wrong.

What I did was: download it, make localmodconfig (put in this folder my distro 
confing file before)
make menuconfig (here I don't know whether I should make some changes)
make;
as root
make modules_install
make install
reboot

As regards vendor-specific and EAPD, they were suggested to me by
Takashi Iwai, who pointed out it should be a problem regarding how the
BIOS sets the mic pins.

Also, I found this interesting in the realtek patch
SND_PCI_QUIRK(0x106b, 0x3400, "MacBookAir 1,1", ALC889_FIXUP_MBP_VREF),
but I think it only fixes sound output, not input.

As regards the last point, can you give me some hints on what to do and
how?

Also, I'm not sure what one can change: just the codec used, or also these can 
be changed
Vendor Id: 0x10ec0885
Subsystem Id: 0x106b3400
Revision Id: 0x100103?

Here is another post with some details regarding my problem (more or
less the same data as here.)

Thanks and best,
Nicolo'

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1170837

Title:
  apple macbookair1,1 microphones not working

Status in “alsa-driver” package in Ubuntu:
  New

Bug description:
  I'm running linux ubuntu 12,04 on a mba. I can't make the microphones
  (neither external nor internal) work.

  Speaking with some wise guys, it seems there is a problem with linux
  kernel trying to decipher apple (intentionally) corrupted bios, in
  particular the mic pins are wrongly assigned.

  The output from alsa scipt is at http://www.alsa-
  project.org/db/?f=be223eb44b2a00f0849a924678698244848ca61b while hda-
  jack-sense-test -a (with external mic in) gives me

  Pin 0x14 (Internal Speaker): present = No
  Pin 0x15 (Green HP Out): present = Yes
  Pin 0x16 (Not connected): present = No
  Pin 0x17 (Not connected): present = No
  Pin 0x18 (Not connected): present = No
  Pin 0x19 (Not connected): present = No
  Pin 0x1a (Not connected): present = No
  Pin 0x1b (Not connected): present = No
  Pin 0x1c (Not connected): present = No
  Pin 0x1d (Not connected): present = No
  Pin 0x1e (Not connected): present = No
  Pin 0x1f (Not connected): present = No

  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.)

  Since I'm not that familiar with this last part of the story, can
  anyone help me through this process?

  Thanks and best,
  N

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu1.1
  ProcVersionSignature: Ubuntu 3.2.0-40.64-generic-pae 3.2.40
  Uname: Linux 3.2.0-40-generic-pae i686
  NonfreeKernelModules: wl
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu17.2
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  nicolo     1834 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0x90500000 irq 43'
     Mixer name : 'Realtek ALC889A'
     Components : 'HDA:10ec0885,106b3400,00100103'
     Controls      : 34
     Simple ctrls  : 20
  Date: Fri Apr 19 23:40:12 2013
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 
(20120817.3)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaRecordingTest: ALSA recording test through plughw:Intel failed
  Symptom_Card: Built-in Audio - HDA Intel
  Symptom_DevicesInUse:
   1834  nicolo    F.... pulseaudio
       PID ACCESS COMMAND
  Symptom_Type: No sound at all
  Title: [HDA-Intel - HDA Intel, recording] No sound at all
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/17/08
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBA11.88Z.00BB.B03.0803171226
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Mac-F42C8CC8
  dmi.board.vendor: Apple Inc.
  dmi.board.version: PVT
  dmi.chassis.asset.tag: Asset Tag#
  dmi.chassis.type: 2
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-F42C8CC8
  dmi.modalias: 
dmi:bvnAppleInc.:bvrMBA11.88Z.00BB.B03.0803171226:bd03/17/08:svnAppleInc.:pnMacBookAir1,1:pvr1.0:rvnAppleInc.:rnMac-F42C8CC8:rvrPVT:cvnAppleInc.:ct2:cvrMac-F42C8CC8:
  dmi.product.name: MacBookAir1,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.
  modified.conffile..etc.modprobe.d.alsa.base.conf:
   alias snd-card-0 snd-hda-intel
   options snd-hda-intel model=3stack
  mtime.conffile..etc.modprobe.d.alsa.base.conf: 2013-01-27T11:40:40.110380

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