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[Bug 1332900] Re: [Alienware 18, Realtek ALC668, Speaker, Internal] Playback problem


** Bug watch added: Linux Kernel Bug Tracker #104901

** Also affects: alsa-driver via
   Importance: Unknown
       Status: Unknown

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

Status in ALSA driver:
Status in alsa-driver package in Ubuntu:

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
  Uname: Linux 3.13.0-29-generic x86_64
  NonfreeKernelModules: wl nvidia
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
   /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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