Bluetooth headsets not recognized in Pulseaudio

Fix Bluetooth no audio: force Bluetooth headset/speaker to be recognized in Linux sound control panel with

pactl load-module module-bluetooth-discover

Force A2DP/HSP audio mode by opening Pulseaudio control panel:

pavucontrol

Under “Configuration” select Bluetooth device audio mode:

Profile audio type direction
A2DP high-fidelity 0-24 kHz stereo one way playback
HSP low-fidelity 0-4 kHz monaural two way talk/listen for Skype et al

reference