Public bug reported:

All involved hardware worked in Ubuntu 11.10.  HSP-only headsets (like
Motorola H300, H700) do not output sound, often cause pulseaudio to
hang, and eventually kick out this log message:

#v+
E: [pulseaudio] bluetooth-util.c: Failed to acquire transport fd: Did not 
receive a reply. Possible causes include: the remote application did not send a 
reply, the message bus security policy blocked the reply, the reply timeout 
expired, or the network connection was broken.
E: [pulseaudio] module.c: Failed to load module "module-bluetooth-device" 
(argument: "address="00:16:8F:D1:95:36" 
path="/org/bluez/31385/hci0/dev_00_16_8F_D1_95_36""): initialization failed.
#v-

After that, the audio sink shows up in pavucontrol, but when selected I
cannot play sound through it.  Many apps like mplayer will hang,
presumably because pulseaudio's input buffer is full.

See also
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/972063

$ lsb_release -rd
Description:    Ubuntu 12.04.3 LTS
Release:        12.04

$ apt-cache policy pulseaudio
pulseaudio:
  Installed: 1:1.1-0ubuntu15.4
  Candidate: 1:1.1-0ubuntu15.4
  Version table:
 *** 1:1.1-0ubuntu15.4 0
        500 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 
Packages
        100 /var/lib/dpkg/status
     1:1.1-0ubuntu15 0
        500 http://us.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages

$ apt-cache policy bluez
bluez:
  Installed: 4.98-2ubuntu7
  Candidate: 4.98-2ubuntu7
  Version table:
 *** 4.98-2ubuntu7 0
        500 http://us.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: pulseaudio 1:1.1-0ubuntu15.4
ProcVersionSignature: Ubuntu 3.2.0-55.85-generic 3.2.51
Uname: Linux 3.2.0-55-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  bts        1045 F.... pulseaudio
 /dev/snd/controlC1:  bts        1045 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xfe024000 irq 16'
   Mixer name   : 'Realtek ALC888'
   Components   : 'HDA:10ec0888,1458a042,00100001'
   Controls      : 45
   Simple ctrls  : 20
Card1.Amixer.info:
 Card hw:1 'CinemaTM'/'Microsoft Microsoft® LifeCam Cinema(TM) at 
usb-0000:00:12.2-5, high speed'
   Mixer name   : 'USB Mixer'
   Components   : 'USB045e:075d'
   Controls      : 2
   Simple ctrls  : 1
Card1.Amixer.values:
 Simple mixer control 'Mic',0
   Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
   Capture channels: Mono
   Limits: Capture 0 - 56
   Mono: Capture 53 [95%] [33.00dB] [on]
Date: Fri Nov  8 00:34:24 2013
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: pulseaudio
UpgradeStatus: Upgraded to precise on 2013-10-13 (26 days ago)
dmi.bios.date: 12/25/2009
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: GA-770TA-UD3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: 
dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd12/25/2009:svnGigabyteTechnologyCo.,Ltd.:pnGA-770TA-UD3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-770TA-UD3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-770TA-UD3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

** Affects: pulseaudio (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise

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https://bugs.launchpad.net/bugs/1249216

Title:
  bluetooth HSP mode broken in pulseaudio

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