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

** Converted to question:
   https://answers.launchpad.net/ubuntu/+source/alsa-driver/+question/252073

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https://bugs.launchpad.net/bugs/1347058

Title:
  [20B6008EUS, Realtek ALC292, Black Headphone Out, Left] Background
  noise or low volume

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

Bug description:
  A high-pitched noise can be heard through the headphone jack. My
  computer is a Lenovo T440 laptop (purchased less than a week ago). The
  noise occurs whether the computer is plugged in or on battery power.
  The noise disappears when the sound is muted. Several other popping
  noises and loud static are heard upon startup. However, these noises
  do not begin until the operating system starts (i.e. no noise is heard
  when the Lenovo screen initially appears). I am also unable to use the
  audio out port on my docking station (Lenovo Pro Dock). It does not
  give any sound when docked.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  drt        1701 F.... pulseaudio
   /dev/snd/controlC1:  drt        1701 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Jul 22 10:20:36 2014
  InstallationDate: Installed on 2014-07-19 (3 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 successful
  Symptom_Card: Built-in Audio - HDA Intel PCH
  Symptom_Jack: Black Headphone Out, Left
  Symptom_PulsePlaybackTest: PulseAudio playback test successful
  Symptom_Type: High background noise, or volume is too low
  Title: [20B6008EUS, Realtek ALC292, Black Headphone Out, Left] Background noise or low volume
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/20/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GJET77WW (2.27 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20B6008EUS
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98401 PRO
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGJET77WW(2.27):bd05/20/2014:svnLENOVO:pn20B6008EUS:pvrThinkPadT440:rvnLENOVO:rn20B6008EUS:rvr0B98401PRO:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20B6008EUS
  dmi.product.version: ThinkPad T440
  dmi.sys.vendor: LENOVO
  mtime.conffile..etc.modprobe.d.alsa.base.conf: 2014-07-22T10:18:24.911309

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