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[Launchpad Bug Tracker <1333024@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: pulseaudio (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1333024

Title:
  Bluetooth audio Underruns, dropouts or crackling sound

Status in “pulseaudio” package in Ubuntu:
  Confirmed

Bug description:
  My bluetooth performance when connected to an audio device is very
  poor on my Lenovo T440s. There are multiple problems when I connect to
  my logitech device:

  1) It often disconnects unexpectedly. It will connect for 2-5 seconds before disconnecting. This happens over and over with no messages in dmesg.
  2) If I can get it to connect, the audio device is listed in the sound settings only about 50% of the time. I have to disconnect, restart bluetooth (\etc\init.d\bluetooth restart) and try again.
  3) If I can get it playing, the audio lags by ~10s and is really, really chopped up. Totally unintelligible.

  The things I know which might help:
  Computer Type:
  Lenovo T440s

  Operating system:
  Description:	Ubuntu 14.04 LTS
  Release:	14.04
  Codename:	trusty

  Linux version :
  3.13.0-29-generic #53-Ubuntu SMP Wed Jun 4 21:00:20 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

  Bluetooth card:
  Network controller: Intel Corporation Wireless 7260 (rev 83)

  Pulseaudio version:
  pulseaudio 4.0 - I don't think it's pulse audio as the daemon won't start:
  $ pulseaudio --check
  $ pulseaudio -D
  E: [pulseaudio] main.c: Daemon startup failed.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: pulseaudio 1:4.0-0ubuntu11
  ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
  Uname: Linux 3.13.0-29-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  seth       2220 F.... pulseaudio
   /dev/snd/controlC1:  seth       2220 F.... pulseaudio
   /dev/snd/pcmC1D0c:   seth       2220 F...m pulseaudio
  CurrentDesktop: Unity
  Date: Sun Jun 22 14:29:41 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-05-21 (32 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  ProcEnviron:
   LANGUAGE=en_CA:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_CA.UTF-8
   SHELL=/bin/bash
  SourcePackage: pulseaudio
  Symptom: audio
  Symptom_Card: (EE)Logitech Adapter
  Symptom_Type: Underruns, dropouts, or "crackling" sound
  Title: [(EE)Logitech Adapter, playback] Underruns, dropouts or crackling sound
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/12/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GJET64WW (2.14 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AQ006HUS
  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:bvrGJET64WW(2.14):bd11/12/2013:svnLENOVO:pn20AQ006HUS:pvrThinkPadT440s:rvnLENOVO:rn20AQ006HUS:rvr0B98401PRO:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20AQ006HUS
  dmi.product.version: ThinkPad T440s
  dmi.sys.vendor: LENOVO

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