linux, bose, bluetooth

bose_bluetooth

I would recommend to clean up you past attempts to pair:

On Ubuntu, remove the headphones from the Bluetooth paired list.
On the headphones, hold the switch in Bluetooth pairing position for 10 seconds to delete all paired devices (You'll get a voice confirmation).
If you can, deactivate Bluetooth on other surrounding devices to make sure they won't interact.

Deactivate Bluetooth LE
Edit Bluetooth configuration file:

sudo nano /etc/bluetooth/main.conf 
Replace:

#ControllerMode = dual
with:

ControllerMode = bredr
Restart Bluetooth:

sudo service bluetooth restart
Pair
Make sure the headphones are in pairing mode.
Pair with System Settings > Bluetooth
Select & test the headphones in System Settings > Sound. You may want to choose High Fidelity Playback (A2DP Sink) for high playback quality.


Reactivate Bluetooth LE (optional)
As it is only the pairing that has to be done without Bluetooth LE, once it is paired you can go back to the original configuration:

sudo nano /etc/bluetooth/main.conf 
Replace:

ControllerMode = bredr
with:

#ControllerMode = dual
Restart Bluetooth:

sudo service bluetooth restart