After trying many approaches to adding Bluetooth keyboard and mouse I have given up for now. checked security and main.config for correct settings I thing its a problem with Ubuntu 20.4 and in particular the kernel i tried up grading to stable kernel 5.14 but the problem persists. "post-eric" ha…

From another post I fixed the problem working ok for now sudo apt install -y linux-modules-extra-5.4.0-80-generic

Bluetooth problematic

Aravisian September 16, 2021, 7:45am 11

At least for your hardware, it appears so.
Fortunately, the previous modules work correctly.

Ethernet and wifi issues - new install