How to Install Realtek RTL8821cu Driver in Debian Bookworm

March 30, 2024 | By the+gnu+linux+evangelist.

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

Hi! The Tutorial shows you Step-by-Step How to Install Realtek RTL8821cu Wireless Driver in Debian Bookworm 12.x GNU/Linux.

Especially relevant: this Realtek RTL8821cu Driver Debian 12 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.

How to Install Realtek RTL8821cu Driver in Debian Bookworm - Featured
  1. 1. Launching Terminal

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

    Step-by-step Debian Realtek RTL8821cu Driver Installation Guide - Open Terminal
    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
  3. 3. Downloading Realtek RTL8821cu Driver

    Download Realtek Driver in Debian GNU/Linux

    Get Realtek Wi-fi Driver in Debian
    If you are using Firefox then on Prompt Choose “Open with Archive Manager”:
    Step-by-step Debian Realtek RTL8821cu Driver Installation Guide - Firefox Prompt
    Or After try to Select the Package by the Downloads Button on Top Panel:
    Step-by-step Debian Realtek RTL8821cu Driver Installation Guide - Downloaded Packages
    Instead, on Google-Chrome simply try to Choose the Package on the Bottom Panel:
    Step-by-step Debian Realtek RTL8821cu Driver Installation Guide - Chrome Bottom Panel Downloads
    How to Install Chrome Browser on Debian

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