Additionally, this issue also appeared along the line with Ubuntu+KDE
and apparently was easily resolved, as described in ubuntuforums.org,
[link](https://ubuntuforums.org/showthread.php?t=2318966).  Quoting
another ubuntuforums.org post (also KDE),
[link](https://askubuntu.com/questions/763539/bluetooth-speaker-no-
sound-in-ubuntu-16-04), "....So far, it seems that things only go wrong
when I try to connect in A2DP mode. Until there is a real
fix/workaround, I am going to try to remember to always switch to
HSP/HSF mode before powering off or disconnecting the speaker.".  So,
perhaps in the short-term for Ubuntu+Unity a similar workaround could be
found, if this is indeed the correct diagnosis, and in the longer-term
figure out why connecting in A2DP mode fails (for both KDE and Unity).

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to bluez in Ubuntu.
https://bugs.launchpad.net/bugs/1691556

Title:
  Can't send audio to Amazon Echo via Bluetooth

Status in bluez package in Ubuntu:
  New

Bug description:
  Pairing and coupling to Amazon Echo works, but no sound is heard.

  I believe the issue is related to the fact that Amazon Echo is paired
  as a handset (i.e., speaker + microphone) rather than just as a
  speaker.  I believe the critical error is found in a dmesg line such
  as:

  Feb 28 10:59:05 n1 bluetoothd[1025]: a2dp-source profile connect
  failed for 50:F5:DA:A6:3F:EA: Device or resource busy

  as I describe in the askubuntu.com discussion at:

  https://askubuntu.com/questions/871630/cant-send-audio-to-amazon-echo-
  via-bluetooth

  I have clarified there my thinking and the steps I've taken thus far
  on this issue, which includes trying debug bluetooth per the Ubuntu
  wiki page which describes how to do so.

  This is probably an upstream issue, as Mike H-R has commented there
  that the problem also occurs on ArchLinux.

  I and a few others would like to get this resolved, and I am happy to
  help (I'm a software developer).  However, at this point, I'm not sure
  how to proceed without some assistance.  I suppose I could report it
  to Debain, but I've only ever used Debain vis a vis Ubuntu, so I
  thought it best to start here.

  Thanks.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: bluez 5.37-0ubuntu5
  ProcVersionSignature: Ubuntu 4.4.0-72.93-generic 4.4.49
  Uname: Linux 4.4.0-72-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Wed May 17 22:27:59 2017
  InstallationDate: Installed on 2015-12-26 (507 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  InterestingModules: rfcomm bnep btusb bluetooth
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-72-generic 
root=UUID=5950fbba-cde1-49ac-a918-04e517894c57 ro quiet splash vt.handoff=7
  SourcePackage: bluez
  UpgradeStatus: Upgraded to xenial on 2017-02-28 (78 days ago)
  dmi.bios.date: 01/18/2017
  dmi.bios.vendor: Intel Corporation
  dmi.bios.version: RYBDWi35.86A.0362.2017.0118.0940
  dmi.board.name: NUC5i5RYB
  dmi.board.vendor: Intel Corporation
  dmi.board.version: H40999-504
  dmi.chassis.type: 3
  dmi.modalias: 
dmi:bvnIntelCorporation:bvrRYBDWi35.86A.0362.2017.0118.0940:bd01/18/2017:svn:pn:pvr:rvnIntelCorporation:rnNUC5i5RYB:rvrH40999-504:cvn:ct3:cvr:
  hciconfig:
   hci0:        Type: BR/EDR  Bus: USB
    BD Address: DC:53:60:97:55:17  ACL MTU: 1021:5  SCO MTU: 96:6
    UP RUNNING PSCAN
    RX bytes:13547334 acl:58 sco:0 events:1935087 errors:0
    TX bytes:1652407651 acl:1934967 sco:0 commands:76 errors:0
  mtime.conffile..etc.bluetooth.main.conf: 2015-12-29T07:24:08.439240

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