Realtek Rtl8812AU Driver Installation in Ubuntu 20.04 – Step-by-step

Installing

2. 2. Enabling Realtek rtl8812AU Driver PPA

   Add Realtek rtl8812AU Driver PPA for Ubuntu GNU/Linux

   Enabling Realtek rtl8812AU Driver Repo for Ubuntu

   Realtek rtl8812AU Driver PPA for Ubuntu

3. 3. Installing Realtek rtl8812AU Driver

   Then to Install Realtek rtl8812AU Driver in Linux
   At the present there are 3 Flavors of the Driver in the Repo.
   So for Legacy Kernels 4.x and below you can try with:

   sudo apt install rtl8812au-legacy-dkms

   Else for Kernels comprises in the Range from 4 to 5:

   sudo apt install rtl8812au-dkms

   Last, for the Latest 5.x instead opt for:

   sudo apt install rtl8812au-next-dkms

   Now if you want to Check your Kernel Version play:

   uname -a

   Finally, in case of Issue to remove it:

   sudo apt-get purge rtl8812au*