I think rather pulseaudio either isn't configured correctly or you haven't authorized the connection (Bluetooth devices will pair, then connect, then you have t

I think rather pulseaudio either isn't configured correctly or you haven't authorized the connection (Bluetooth devices will pair, then connect, then you have to authorize them. In bluetoothctl you get an asynchronous yes/no prompt, I don't know what this looks like in the GUI bluetooth management tools.) Generally drivers on Linux are all kind of shipped together. Unless you have some really niche device that's so rare your distro doesn't ship the module for it with its normal "linux" package you're not missing drivers. That's almost certainly not the case with A2DP/HFP especially if bluetooth itself already works.