GNU/Linux Ubuntu 18.04 Installing Rtl8761B Bluetooth Driver Guide
Hi! The Tutorial shows you Step-by-Step How to Download and Install Realtek Rtl8761B Bluetooth 5.0 Driver for Ubuntu 18.04 Bionic LTS GNU/Linux.
And Rtl8761B Bluetooth Driver for Ubuntu 18.04 should be present on Kernel, what may be missing is only the Firmware.
1. Terminal Getting-Started
How to QuickStart with Command Line on Ubuntu GNU/Linux:
In case, to get more insight about the Bluetooth Issue run:
sudo dmesg | grep Bluetooth
And in case of a missing Firmware in output you find something like:
Contents