realtek 8723de driver ubuntu code example
Example: how to permanently install WIFI drivers Realtek 8723DE in Ubuntu 18.04
sudo dkms remove rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414 --all
sudo dkms add ./rtl8723de
sudo dkms install rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414