Comment 13 for bug 1489651

For 17.10 fresh install the best solution was just the "disable pulseaudio's bluetooth in gdm", i.e.
Add this to /var/lib/gdm3/.config/pulse/default.pa:

#!/usr/bin/pulseaudio -nF
#

# load system wide configuration
.include /etc/pulse/default.pa

### unload driver modules for Bluetooth hardware
.ifexists module-bluetooth-policy.so
  unload-module module-bluetooth-policy
.endif

.ifexists module-bluetooth-discover.so
  unload-module module-bluetooth-discover
.endif

Nothing more needed...

It almost seems the Debian upstream bug assumes one would get audio thru bluetooth, just not A2DP.
Here on my speaker it's A2DP or nothing so as it stands now there is nothing..