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[chrisolof <chrisolof@xxxxxxxxx>]

** 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

Status in alsa-driver package in Ubuntu:
  Confirmed

Bug description:
  == Summary ==
  Since upgrading a MacBook Air from 11.10 to 12.04 the headset microphone is no longer recognized.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
  Uname: Linux 3.2.0-18-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.94-0ubuntu2
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: NVidia [HDA NVidia], device 0: Cirrus Analog [Cirrus Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  jon        1864 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'NVidia'/'HDA NVidia at 0xd3280000 irq 16'
     Mixer name	: 'Nvidia MCP89 HDMI'
     Components	: 'HDA:10134206,106b3d00,00100301 HDA:10de000c,10de0101,00100200'
     Controls      : 36
     Simple ctrls  : 12
  Date: Thu Mar  8 21:09:23 2012
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64+mac (20111012)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Title: USB sound card not detected
  UpgradeStatus: Upgraded to precise on 2012-03-05 (3 days ago)
  dmi.bios.date: 11/18/10
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBA31.88Z.0061.B01.1011181342
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-942C5DF58193131B
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookAir3,2
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-942C5DF58193131B
  dmi.modalias: dmi:bvnAppleInc.:bvrMBA31.88Z.0061.B01.1011181342:bd11/18/10:svnAppleInc.:pnMacBookAir3,2:pvr1.0:rvnAppleInc.:rnMac-942C5DF58193131B:rvrMacBookAir3,2:cvnAppleInc.:ct10:cvrMac-942C5DF58193131B:
  dmi.product.name: MacBookAir3,2
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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