How to Install Realtek RTL8821cu RHEL Driver – Step by step

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

How to Install Realtek RTL8821cu Wireless Driver on RHEL GNU/Linux desktop/server.

Especially relevant: this Realtek RTL8821cu Driver RHEL 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
   First, possibly Upgrade your system with:

   sudo dnf upgrade --refresh

   In this case after reboot:

   sudo reboot

   Then run:

   sudo dnf groupinstall "Development Tools"

   Further you may need also the C Libraries:

   sudo dnf groupinstall "C Development Tools and Libraries"

   How to Enable CRB Repo on RHEL

   Enabling RHEL CRB Repo

   How to Enable RHEL CRB Repo Guide
   And again:

   sudo dnf install dkms kernel-headers kernel-devel elfutils-libelf-devel unzip git

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