Ubuntu 20.04 Realtek RTL8821cu Driver Installation – Step-by-step

GNU/Linux Ubuntu 20.04 Realtek RTL8821cu Driver Setup – Step-by-step Guide

Hi! The Tutorial shows you Step-by-Step How to Install Realtek RTL8821cu Wireless Driver for Ubuntu 20.04 Focal LTS GNU/Linux.

Especially pertinent to consider, as a Simpler Alternative, you should initially attempt with the PPA rtl8821CU Driver Setup.

And this Realtek RTL8821cu Driver for Ubuntu Focal Setup should be working also after a Kernel Upgrade with the Dkms integration.

Please be aware of how this Driver is Not supporting all the Linux Kernels range, so in case of issue consult the available Online Documentation.

So as a possible Solution, then you may also see: How to Install New Kernel Guide.

Again, in case of Issue for preventing any possible Driver loading Interference you should also take into account: How to Blacklist Kernel Modules.

1. 1. Launching Terminal

   Open a Terminal Shell Emulator Window:
   (Press “Enter” to Execute Commands).

   
   In case first see: Terminal QuickStart Guide.
   

2. 2. Installing Dependencies

   Then to Install Required Stuff Simply play:

   sudo apt install linux-headers-generic build-essential git dkms unzip