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ASUS USB-AC55 Debian Bullseye Driver Installation

April 7, 2023 | By the+gnu+linux+evangelist.

Installing

  1. 2. Installing Firmware

    So to Install Non-free Firmware for Mt76 Module
    Simply play:

    sudo apt install firmware-misc-nonfree

    But if “not found” then follow the instructions on the linked Guide.
    How to Add Debian Non Free Repo Preserving System

    contrib & non-free Repos Setup Guide
  2. 3. Updating System

    So then best to Update System
    Running:

    sudo apt update && sudo apt upgrade

    In case of a New Kernel Setup then Reboot with:

    sudo reboot now

    Then Check your Kernel Version with:

    uname -r

    The Device should work properly on a 5.4.1+ Kernel.
    How to Install the Latest Kernel on Debian Bullseye

    Mainline Kernel Debian Bullseye Installation
  3. 4. Loading Driver

    Then to Load MediaTek MT76 Kernel Module
    Usually Automatically loaded at Startup!
    But in case, simply play:

    sudo modprobe mt76

    Or for a USB Device try with:

    sudo modprobe mt76-usb

    To know that with Kernel 5.9 also a SDIO Socket version is introduced:

    sudo modprobe mt76-sdio

    Then restart the Network Manager Service play:

    sudo service network-manager restart

    Possibly, try also to unplug and replug in your Adapter.

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