Step-by-step – Realtek Rtl8821AU Driver Installation in Ubuntu 20.04

GNU/Linux Ubuntu 20.04 Realtek rtl8821AU Driver Setup – Step-by-step Guide

Hi! The Tutorial shows you Step-by-Step How to Install Realtek rtl8821AU WiFi Driver for Ubuntu 20.04 Focal LTS GNU/Linux.

Especially relevant: this Realtek rtl8821AU Driver Ubuntu 20.04 Setup should be working also after a Kernel Upgrade with the Dkms integration.

Finally, from the Realtek Support Driver Website comes out that it may be working for all the following Chipsets:

• RTL8192EU
• RTL8811AU
• RTL8811CU
• RTL8812AU
• RTL8812BU
• RTL8814AU
• RTL8821AU

1. 1. Terminal Getting-Started Guide

   How to QuickStart with Command Line on Ubuntu GNU/Linux:

   Console Ubuntu QuickStart Guide

   Getting-Started with Command Line on Ubuntu Linux

   First Update the Apt Repo Sources with:

   sudo apt update

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo.

2. 2. Installing Dependencies

   Then to Install Required Packages
   First, preferably Upgrade your System with:

   sudo apt update && sudo apt upgrade

   In this case then Reboot it using:

   sudo reboot

   Then run:

   sudo apt install build-essential linux-headers-$(uname -r) dkms unzip git

   Authenticate with the User Admin Pass.