[Expired for bluez (Ubuntu) because there has been no activity for 60
days.]

** Changed in: bluez (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1735941

Title:
  no stereo on reconnect or by default for Sony 1000xm2 headphones

Status in bluez package in Ubuntu:
  Expired
Status in pulseaudio package in Ubuntu:
  Expired

Bug description:
  Expectation: Bluetooth headphones attach with stereo sound on every connect.
  Issue: only stereo after manual switch of settings on first pair. Reconnect 
only has mono connection.

  Ubuntu 17.10 on a System76 Serval WS.

  Mono audio with the Sony 1000XM2 bluetooth headphones is the default
  on first pairing and is the only option after turning off the
  bluetooth or headphones.

  On a new pairing the default is HSP with mono audio. Manually I have
  to change to A2DP in the sound settings and I am able to have stereo
  sound. Disabling bluetooth or turning off the headphones followed by a
  connection will result in mono audio in HSP and switching to A2DP will
  also be mono.

  Temporary Workaround: remove the headphones from the paired devices
  and pair again as a new device to get access to stereo sound again.
  This procedure has to be repeated on every reconnect.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: bluez 5.46-0ubuntu3
  ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
  Uname: Linux 4.13.0-17-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.7-0ubuntu3.5
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Dec  2 14:54:12 2017
  EcryptfsInUse: Yes
  InterestingModules: rfcomm bnep btusb bluetooth
  MachineType: System76, Inc. Serval WS
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-17-generic.efi.signed 
root=UUID=90a6c4ca-5b2a-461e-8792-18cd7e54a2fb ro quiet splash vt.handoff=7
  SourcePackage: bluez
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/08/2016
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.05.10RSA
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: Serval WS
  dmi.board.vendor: System76, Inc.
  dmi.board.version: serw9
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: System76, Inc.
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr1.05.10RSA:bd03/08/2016:svnSystem76,Inc.:pnServalWS:pvrserw9:rvnSystem76,Inc.:rnServalWS:rvrserw9:cvnSystem76,Inc.:ct10:cvrN/A:
  dmi.product.family: Not Applicable
  dmi.product.name: Serval WS
  dmi.product.version: serw9
  dmi.sys.vendor: System76, Inc.
  hciconfig:
   hci0:        Type: Primary  Bus: USB
        BD Address: 44:85:00:36:47:F9  ACL MTU: 1021:4  SCO MTU: 96:6
        UP RUNNING PSCAN INQUIRY 
        RX bytes:18865088 acl:249 sco:362504 events:45487 errors:0
        TX bytes:53430737 acl:40447 sco:362442 commands:2995 errors:9

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