stero bluetooth headphones play in mono

[Kathleen]

I'm running Ubuntu 16.04.1 LTS, preinstalled on Lenovo G50-70.

Blueman version is 2.0.4-1ubuntu2.

I expected my Sony MDR-ZX770BT stereo headphones to play through Bluetooth in stereo. Instead, I get mono sound through both sides of the headphones.

When I try to switch the audio mode to A2DP in Blueman, I get this error message: Failed to change profile to a2dp_sink.

I have Bluetooth rtl8723be in my computer, and have been told on ubuntu forums that this is probably the cause of my bug.

I couldn't find Blueman in the list of debugging procedures.

Thank you for you help.
Kind regards,
Kathleen

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: blueman 2.0.4-1ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Aug 28 17:46:57 2016
InstallationDate: Installed on 2016-08-17 (11 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: blueman
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Jeremy (wa113y3s)]

Kathleen
Can you try the a2dp.py script from https://bugs.launchpad.net/ubuntu/+source/indicator-sound/+bug/1577197/comments/25

[Eloi (adarkling)]

The a2dp.py script worked for me.
Thanks!
I look forward to seeing this taken care of automatically.

[Hugh Ingram (hughi94)]

This bug also affects me with:

Dell xps 9370
Bose 700 Headphones

Ubuntu 20.04
Kernel: x86_64 Linux 5.4.0-37-generic
pulesaudio: 13.99.1
blueman-applet: 2.1.2