Unable to pair A2DP audio device with bluetooth (hci link tx timeout)

[John]

$ dmesg | grep -i bluetooth
[ 40.217717] Bluetooth: Core ver 2.16
[ 40.234051] Bluetooth: HCI device and connection manager initialized
[ 40.234055] Bluetooth: HCI socket layer initialized
[ 40.234057] Bluetooth: L2CAP socket layer initialized
[ 40.234066] Bluetooth: SCO socket layer initialized
[ 40.257996] Bluetooth: Generic Bluetooth USB driver ver 0.6
[ 40.850187] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked
[ 41.409187] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 41.409192] Bluetooth: BNEP filters: protocol multicast
[ 41.433158] Bluetooth: RFCOMM TTY layer initialized
[ 41.433163] Bluetooth: RFCOMM socket layer initialized
[ 41.433165] Bluetooth: RFCOMM ver 1.11
[ 203.145212] Bluetooth: hci0 link tx timeout
[ 203.145226] Bluetooth: hci0 killing stalled connection 00:0C:8A:96:D9:19
[ 203.145521] Bluetooth: hci0 link tx timeout
[ 203.145531] Bluetooth: hci0 killing stalled connection 00:0C:8A:96:D9:19

$ hciconfig
hci0: Type: BR/EDR Bus: USB
 BD Address: 00:0E:9B:DD:29:F6 ACL MTU: 377:10 SCO MTU: 64:8
 UP RUNNING PSCAN
 RX bytes:3866 acl:17 sco:0 events:286 errors:0
 TX bytes:2128 acl:20 sco:0 commands:260 errors:0

$ bluez-test-audio connect 00:0C:8A:96:D9:19
Traceback (most recent call last):
  File "/usr/bin/bluez-test-audio", line 40, in <module>
    audio.Connect()
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 70, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: 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.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: blueman 1.23-0ubuntu2.1
ProcVersionSignature: Ubuntu 3.2.0-57.87-generic 3.2.52
Uname: Linux 3.2.0-57-generic i686
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: i386
Date: Tue Dec 10 04:06:18 2013
MarkForUpload: True
ProcEnviron:
 LANGUAGE=de_DE:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: blueman
UpgradeStatus: Upgraded to precise on 2012-09-05 (460 days ago)

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 12.04 (precise) reached end-of-life on April 28, 2017.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.