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Realtek Rtl8821AU Driver Installation in Linux Mint 21 – Step-by-step

January 9, 2023 | By the+gnu+linux+evangelist.

Downloading

  1. 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.

  2. 3. Downloading Realtek rtl8821AU Driver

    (Bewilderment can arise because this setup is making use of the rtl8812AU Code)
    Download Realtek rtl8821AU Driver in Mint GNU/Linux

    Get Realtek rtl8821AU Driver in Mint

    Or better Clone it with Git.
    Especially relevant: in the New Posts Revision I have included a greate Alternative to the default gnab Driver.
    So, in case of the aircrack-ng choice then follow the Github Developer Documentation to setup it.
    Especially relevant: the Aircrack-ng release include support for “Monitor mode” and “Frame injection“!

  3. 4. Extracting Realtek rtl8821AU Driver

    And then Extract Driver Archive into /tmp
    (Skip in case of Git Checkout)
    Possibly Double-Click/Right-Click on Package and Open with Archive Manager:

    Step-by-step Realtek rtl8821AU Driver Linux Mint 21 Installation - Extraction
    Or from Command Line:

    unzip -d /tmp/ ~/Downloads/*master.zip

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