Also, remember that after you set that and basically restart, when you're all set and your bt headset is paired you still have to go to sound options and select it as an output and select A2DP or you won't be getting any sound out of it.
Every time you play with something you have to go back there and set your headset as the output again. ;)
Alternatively, this restarts bt for the system:
sudo service bluetooth restart
Also, remember that after you set that and basically restart, when you're all set and your bt headset is paired you still have to go to sound options and select it as an output and select A2DP or you won't be getting any sound out of it.
Every time you play with something you have to go back there and set your headset as the output again. ;)
Alternatively, this restarts bt for the system:
sudo service bluetooth restart
And this restarts pulseAudio:
pulseaudio -k
Use as needed.
Cheers