wifi adapter not found ubuntu 20.04 code example

Example 1: wifi adapter not detected ubuntu

# Run this and reboot
sudo apt-get install --reinstall bcmwl-kernel-source

Example 2: no wifi adapter found ubuntu 18.04

sudo apt install linux-generic-hwe-18.04

Example 3: wifi adapter not found ubuntu 20.04

sudo apt install --reinstall bcmwl-kernel-source