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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

** Tags added: latest-bios-1.20

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https://bugs.launchpad.net/bugs/1534434

Title:
  [20BVCTO1WW, Realtek ALC3232, Black Headphone Out, Right] Underruns,
  dropouts or crackling sound

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  Hello, i'm currently having the same issue on a Thinkpad T450, with
  Ubuntu 15.10 and 15.04

  I connect my headphones to the headphone jack, when i enter the
  headphone, i get the same cracking, popping sound as startup and
  shutdown/reboot.

  So, when i boot, i get a cracking, popping sound that overpowers the
  headphones, it still occurs when i shutdown the laptop or reboot.

  The output of alsa-info.sh gives me a different codec instead of the proposed fix information
  0x10ec0292 0x17aa5036 0

  i have
  0x10ec0292 0x17aa5034 0

  I tried the fix with both 0x17aa5036 and 0x17aa5034, on Ubuntu 15.10
  and 15.04 without luck, the symptom stays, the cracking sound appears
  at startup and shutdown.

  I tried fedora 23 and i still have the issue.

  Probably caused by the same issue, i get a static noise in the both
  headphones if i mute it goes away

  Thanks for your help.


  Almost similar issue as specified here

  
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1502155

  
  Detailed info :
  Description:	Ubuntu 15.10
  Release:	15.10

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
  Uname: Linux 4.2.0-23-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  madmantm   1370 F.... pulseaudio
                        madmantm   1916 F.... alsamixer
   /dev/snd/controlC0:  madmantm   1370 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Thu Jan 14 22:18:30 2016
  InstallationDate: Installed on 2016-01-15 (0 days ago)
  InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
  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, Right
  Symptom_PulsePlaybackTest: PulseAudio playback test successful
  Symptom_Type: Underruns, dropouts, or "crackling" sound
  Title: [20BVCTO1WW, Realtek ALC3232, Black Headphone Out, Right] Underruns, dropouts or crackling sound
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/23/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: JBET55WW (1.20 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20BVCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40705 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: dmi:bvnLENOVO:bvrJBET55WW(1.20):bd12/23/2015:svnLENOVO:pn20BVCTO1WW:pvrThinkPadT450:rvnLENOVO:rn20BVCTO1WW:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20BVCTO1WW
  dmi.product.version: ThinkPad T450
  dmi.sys.vendor: LENOVO

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