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[Luis Henriques <luis.henriques@xxxxxxxxxxxxx>]

** Also affects: linux (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Trusty)
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1504778

Title:
  Lenovo G50-80 - Inverted Internal microphone (phase inversion)

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Trusty:
  Fix Committed
Status in linux source package in Wily:
  Fix Released

Bug description:
  Can confirm the bug on Lenovo g50-80.

  Alsa-hda-dkms package doesn't help (there is no "Inverted Internal
  Mic" entry in alsamixer after reboot).

  Removed alsa-hda-dkms and tried "option snd-hda-intel model=auto" but
  it doesn't help.

  Workaround "mute right channel" works but can it be fixed permanently
  (I don't want to manually mute right mic channel every time I use
  skype)?

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-30.34~14.04.1-generic 3.19.8-ckt6
  Uname: Linux 3.19.0-30-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.15
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC1D0p:   nikola     1819 F...m pulseaudio
   /dev/snd/controlC1:  nikola     1819 F.... pulseaudio
   /dev/snd/controlC0:  nikola     1819 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Sat Oct 10 15:31:56 2015
  InstallationDate: Installed on 2015-10-06 (3 days ago)
  InstallationMedia: Kubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/27/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: B0CN72WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: Lenovo G50-80
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo G50-80
  dmi.modalias: dmi:bvnLENOVO:bvrB0CN72WW:bd01/27/2015:svnLENOVO:pn80L0:pvrLenovoG50-80:rvnLENOVO:rnLenovoG50-80:rvrNODPK:cvnLENOVO:ct10:cvrLenovoG50-80:
  dmi.product.name: 80L0
  dmi.product.version: Lenovo G50-80
  dmi.sys.vendor: LENOVO

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