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[Raymond <1332900@xxxxxxxxxxxxxxxxxx>]

do hda jack sense test also indicate the headset Jack is node 0x15,
headphone Jack is 0x16

and Mic Jack is 0x19


https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1302090/comments/4

the current driver put two headphone jacks in multi out  , this is good
for supporting 5.1 but the drawback is your 2.1 speaker share the volume
control and no bass playback volume controls

may need hint or Def assoicstion of the pins  to determine whether
subwoofer/headphone  have priority to use the volume controls

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https://bugs.launchpad.net/bugs/1332900

Title:
  [Alienware 18, Realtek ALC668, Speaker, Internal] Playback problem

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

Bug description:
  Bug seems similar to another reported bug with Alienware 18 laptops.
  It should be Realtek ALC3661 however it shows up as ALC668. Sound only
  comes out of 1 Channel, which appears to be subwoofer. Unlike the
  other bug, closing the lid appears to have no effect on sound.

  When doing the bug test, it said sound would alternate between 2
  channels, however I only heard one consistent sound. It did not
  alternate. I believe it is playing from the subwoofer only. I would
  love to know more about how to route the sound to the proper speakers.

  I attempted modifications to daemon.conf in pulse and .asoundrc but
  have not found the correct configuration yet.

  This laptop is equipped with 2.1 Surround and should play sound
  accordingly. Also, alsamixer only shows (1) speaker control, whether
  this is normal I am unsure.

  
  Ubuntu 14.04 LTS

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
  Uname: Linux 3.13.0-29-generic x86_64
  NonfreeKernelModules: wl nvidia
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  phallix    1730 F.... pulseaudio
   /dev/snd/controlC0:  phallix    1730 F.... pulseaudio
                        phallix    8573 F.... alsamixer
  CurrentDesktop: Unity
  Date: Sat Jun 21 21:02:28 2014
  InstallationDate: Installed on 2014-06-15 (6 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
  Symptom_Card: Built-in Audio - HDA Intel PCH
  Symptom_Jack: Speaker, Internal
  Symptom_Type: Only some of outputs are working
  Title: [Alienware 18, Realtek ALC668, Speaker, Internal] Playback problem
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/23/2014
  dmi.bios.vendor: Alienware
  dmi.bios.version: A07
  dmi.board.name: 01W2J2
  dmi.board.vendor: Alienware
  dmi.board.version: A02
  dmi.chassis.type: 8
  dmi.chassis.vendor: Alienware
  dmi.chassis.version: A07
  dmi.modalias: dmi:bvnAlienware:bvrA07:bd04/23/2014:svnAlienware:pnAlienware18:pvrA07:rvnAlienware:rn01W2J2:rvrA02:cvnAlienware:ct8:cvrA07:
  dmi.product.name: Alienware 18
  dmi.product.version: A07
  dmi.sys.vendor: Alienware
  mtime.conffile..etc.modprobe.d.alsa.base.conf: 2014-06-17T23:18:00.223827

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