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[Oriana <orianabruecker@xxxxxxxxxx>]

Fixed by installing daily alsa build from https://code.launchpad.net
/~ubuntu-audio-dev/+archive/ubuntu/alsa-daily/+packages

** Changed in: alsa-driver (Ubuntu)
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1421118

Title:
  [20-2110nz, Realtek ALC280, Speaker, Internal] Playback problem :
  headphones ok, speaker ko

Status in alsa-driver package in Ubuntu:
  Fix Committed

Bug description:
  Speaker doesn't work at all under Ubuntu, but sound through headphones is working fine.
  The machine is an hp 20 all-in-one. The hardware is fine, as the speaker does work in the original Windows 8 that came with the computer. We played with alsamixer and tried to tweak /etc/modprobe.d/alsa-base.conf to no avail. We never managed to get a single sound through the internal speakers in Ubuntu.

  --
  Hardware:  hp 20 all-in-one
  O.S.:   	     Ubuntu 14.04.1 LTS
  package:     alsa-base 1.0.25+dfsg-0ubuntu4
  expected:   internal speakers to produce sound with "sound settings test", vlc or web browser
  happened:  no sound through internal speakers ever in Ubuntu (but yes through headphones in Ubuntu and through internal  
                        speakers in Windows)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13
  Uname: Linux 3.13.0-45-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  oriana     1848 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 12 09:59:05 2015
  InstallationDate: Installed on 2015-02-11 (0 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  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: [20-2110nz, Realtek ALC280, Speaker, Internal] Playback problem
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/12/2014
  dmi.bios.vendor: AMI
  dmi.bios.version: 80.13
  dmi.board.asset.tag: 4CH4457MH7
  dmi.board.name: 2B15
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 1.02A
  dmi.chassis.asset.tag: 4CH4457MH7
  dmi.chassis.type: 3
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnAMI:bvr80.13:bd06/12/2014:svnHewlett-Packard:pn20-2110nz:pvr:rvnHewlett-Packard:rn2B15:rvr1.02A:cvnHewlett-Packard:ct3:cvr:
  dmi.product.name: 20-2110nz
  dmi.sys.vendor: Hewlett-Packard
  mtime.conffile..etc.modprobe.d.alsa.base.conf: 2015-02-12T09:58:59.506131

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