Bluez5 is only supported by PulseAudio and not by ALSA.

Loading

modprobe btusb systemctl start bluetooth

Unblock

rfkill list rfkill unblock

Connecting

bluetoothctl

power on agent on default-agent scan on pair 00:1D:43:6D:03:26 connect 00:1D:43:6D:03:26

scan off exit

set output

pavucontrol