### Run Installation Script

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Execute the driver installation script.

```bash
sudo ./install-driver.sh
```

```bash
sudo sh install-driver.sh
```

--------------------------------

### Install Dependencies for Ubuntu

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install build tools and utilities for Ubuntu and its derivatives.

```bash
sudo apt install -y build-essential dkms git iw
```

--------------------------------

### Install Dependencies for openSUSE

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install kernel development patterns and dkms on openSUSE.

```bash
sudo zypper install -t pattern devel_kernel dkms
```

--------------------------------

### Install Driver (Secure Boot On)

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install and sign the driver for systems with Secure Boot enabled.

```bash
sudo make sign-install
```

```bash
sudo reboot
```

--------------------------------

### Install RTL8821CU Driver

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Clone the repository and run the automated installation script. Ensure required packages are installed first. Use 'NoPrompt' for non-interactive installations.

```bash
git clone https://github.com/morrownr/8821cu-20210916.git
cd 8821cu-20210916

# Install required packages (Debian/Ubuntu)
sudo apt install -y linux-headers-$(uname -r) build-essential bc dkms git libelf-dev rfkill iw

# Run the installation script
sudo ./install-driver.sh

# For non-interactive/automated installations
sudo ./install-driver.sh NoPrompt
```

--------------------------------

### Install Dependencies for Fedora

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install build tools for Fedora. Install openssl separately if Secure Boot is active.

```bash
sudo dnf -y install git dkms kernel-devel
```

--------------------------------

### Install Driver (Secure Boot Off)

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install the compiled driver when Secure Boot is disabled.

```bash
sudo make install
```

```bash
sudo reboot
```

--------------------------------

### Install Dependencies for Armbian

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install build-essential on Armbian systems.

```bash
sudo apt install -y build-essential
```

--------------------------------

### Start Aircrack-ng Monitor Mode

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Initiates monitor mode on the wlan0 interface using Aircrack-ng. Ensure the driver is installed and the interface is recognized.

```bash
sudo airmon-ng start wlan0
```

--------------------------------

### Install Dependencies for Void Linux

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install kernel headers and build tools on Void Linux.

```bash
sudo xbps-install linux-headers dkms git make
```

--------------------------------

### Setup Driver Directory

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Create and navigate to the directory for the driver source code.

```bash
mkdir -p ~/src
```

```bash
cd ~/src
```

--------------------------------

### Install Dependencies for Raspberry Pi OS

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install kernel headers and build tools for Raspberry Pi OS.

```bash
sudo apt install -y raspberrypi-kernel-headers build-essential bc dkms git
```

--------------------------------

### Install Dependencies for Debian, Kali, and Raspberry Pi Desktop

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install required headers and build tools for x86 Debian-based systems.

```bash
sudo apt install -y linux-headers-$(uname -r) build-essential bc dkms git libelf-dev rfkill iw
```

--------------------------------

### Install Dependencies for Alpine

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install kernel development headers and build tools on Alpine Linux.

```bash
sudo apk add linux-lts-dev make gcc
```

--------------------------------

### Install Dependencies for Arch and Manjaro

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install build dependencies using pacman. Use the specific RPi4B headers if applicable.

```bash
sudo pacman -S --noconfirm linux-headers dkms git bc iw
```

```bash
sudo pacman -S --noconfirm linux-rpi4-headers dkms git bc
```

--------------------------------

### Clean and Compile Driver

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Prepare the source code for installation by cleaning previous builds and compiling with multi-core support.

```bash
make clean
```

```bash
make -j$(nproc)
```

--------------------------------

### Install Driver

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Installs or reinstalls the driver after a system upgrade or reboot. This command should be run after the distro upgrade is complete and the system has rebooted.

```bash
sudo sh install-driver.sh
```

--------------------------------

### Install Specific GCC Version

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Install a specific GCC version to match the kernel compilation version.

```bash
sudo apt install gcc-12
```

--------------------------------

### Driver Installation Commands

Source: https://github.com/morrownr/8821cu-20210916/blob/main/docs/Concurrent_Mode.md

Commands to remove and reinstall the driver after modifying the Makefile.

```bash
sudo ./remove-driver.sh
```

```bash
sudo ./install-driver.sh
```

--------------------------------

### Install Driver with Secure Boot

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Installs the 8821cu driver on systems with UEFI Secure Boot enabled. DKMS typically handles the necessary MOK signing automatically. Follow the on-screen prompts during boot for MOK enrollment if required.

```bash
sudo ./install-driver.sh
```

--------------------------------

### Upgrade Fedora Systems

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Upgrades all installed packages on Fedora systems. Use this command to ensure your system is up-to-date before installing new software.

```bash
sudo dnf upgrade
```

--------------------------------

### Update and Upgrade Debian-based Systems

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Updates package lists and upgrades installed packages on Debian-based distributions like Ubuntu and Raspberry Pi OS. Run this before installing new software or drivers.

```bash
sudo apt update && sudo apt upgrade
```

--------------------------------

### Uninstall Driver

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Remove the manually installed driver from the system.

```bash
sudo make uninstall
```

```bash
sudo reboot
```

--------------------------------

### Remove Driver

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Executes the script to remove the currently installed driver. This command should be run before a distro upgrade to prevent conflicts with new kernel installations.

```bash
sudo sh remove-driver.sh
```

--------------------------------

### Update openSUSE Systems

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Updates installed packages on openSUSE distributions. This command refreshes repositories and upgrades packages.

```bash
sudo zypper update
```

--------------------------------

### Update and Upgrade Void Linux Systems

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Updates package repositories and upgrades installed packages on Void Linux. This command is specific to the xbps package manager.

```bash
sudo xbps-install -Syu
```

--------------------------------

### Remove Driver via Script

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Execute the removal script to clean up installed driver files.

```bash
cd ~/src/8821cu-20210916
```

```bash
sudo ./remove-driver.sh
```

--------------------------------

### Update and Upgrade Arch-based Systems

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Synchronizes package databases and upgrades installed packages on Arch-based distributions like Manjaro. This is a standard maintenance command for Arch systems.

```bash
sudo pacman -Syu
```

--------------------------------

### Check DKMS Status

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Queries the Dynamic Kernel Module Support (DKMS) system to check the status of installed kernel modules, including the 8821cu driver.

```bash
sudo dkms status
```

--------------------------------

### Update 8821cu Driver

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Updates the 8821cu driver by pulling the latest changes from the repository, removing the old installation, performing a system upgrade, and then reinstalling the updated driver. This process is recommended before kernel upgrades.

```bash
cd ~/src/8821cu-20210916
```

```bash
git pull
```

```bash
sudo ./remove-driver.sh
```

```bash
sudo apt update && sudo apt upgrade
```

```bash
sudo reboot
```

```bash
cd ~/src/8821cu-20210916
```

```bash
sudo ./install-driver.sh
```

--------------------------------

### Download and Navigate to Driver

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Clone the repository and enter the driver directory.

```bash
git clone https://github.com/morrownr/8821cu-20210916.git
```

```bash
cd ~/src/8821cu-20210916
```

--------------------------------

### Configure Power Management (rtw_power_mgnt)

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Configure power saving behavior with `rtw_power_mgnt`. Options are disable (0 for best performance), minPS (1 - default, balanced), and maxPS (2 - not recommended for AP mode).

```bash
# Power saving options in /etc/modprobe.d/8821cu.conf
# 0 = Disable power saving (best performance)
# 1 = Power saving on, minPS (default - balanced)
# 2 = Power saving on, maxPS (not recommended for AP mode)

# Disable power saving for maximum performance
options 8821cu rtw_power_mgnt=0

# Default balanced power saving
options 8821cu rtw_power_mgnt=1

# Maximum power saving (managed mode only)
options 8821cu rtw_power_mgnt=2
```

--------------------------------

### Configure LED Control (rtw_led_ctrl)

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Control the adapter's LED behavior using the `rtw_led_ctrl` module parameter. Options include always off (0), normal blink (1 - default), or always on (2).

```bash
# LED options in /etc/modprobe.d/8821cu.conf
# 0 = Always off
# 1 = Normal blink (default)
# 2 = Always on

# Disable LED completely
options 8821cu rtw_led_ctrl=0

# Normal LED blinking (default)
options 8821cu rtw_led_ctrl=1

# LED always on when adapter is active
options 8821cu rtw_led_ctrl=2
```

--------------------------------

### Configure Driver Options

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Edit driver behavior using module parameters in `/etc/modprobe.d/8821cu.conf`. Changes require a reboot. Use the helper script or a text editor. View available parameters in `/sys/module/8821cu/parameters/`.

```bash
# Edit driver options using the helper script
sudo ./edit-options.sh

# Or edit directly
sudo nano /etc/modprobe.d/8821cu.conf

# Example configuration for managed mode (default)
options 8821cu rtw_led_ctrl=1

# Example configuration for AP mode with hostapd
options 8821cu rtw_drv_log_level=0 rtw_led_ctrl=0 rtw_vht_enable=2 rtw_power_mgnt=1 rtw_dfs_region_domain=1

# View all available module parameters
ls /sys/module/8821cu/parameters/

# View current parameter values
grep [[:alnum:]] /sys/module/8821cu/parameters/*
```

--------------------------------

### Edit Makefile

Source: https://github.com/morrownr/8821cu-20210916/blob/main/docs/Concurrent_Mode.md

Open the Makefile using the system's default editor.

```bash
${EDITOR} Makefile
```

--------------------------------

### Upgrade Driver

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Commands to update the driver source and reinstall it.

```bash
cd ~/src/8821cu-20210916
```

```bash
sudo ./remove-driver.sh
```

```bash
git pull
```

```bash
sudo ./install-driver.sh
```

--------------------------------

### Manage Debug Logging

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Configure driver log levels and capture output to a file.

```bash
# Log level options in /etc/modprobe.d/8821cu.conf
# 0 = NONE (default - no logging)
# 1 = ALWAYS
# 2 = ERROR
# 3 = WARNING
# 4 = INFO
# 5 = DEBUG
# 6 = MAX (most verbose)

# Enable error-level logging
options 8821cu rtw_drv_log_level=2

# Enable verbose debug logging
options 8821cu rtw_drv_log_level=5

# Save RTW log entries to rtw.log file
sudo ./save-log.sh
```

--------------------------------

### Enable Concurrent Mode

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Modify the Makefile and reinstall the driver to support dual-interface operations.

```bash
# Edit Makefile to enable concurrent mode
nano Makefile

# Uncomment this line:
# Before: #ccflags-y += -DCONFIG_CONCURRENT_MODE
# After:  ccflags-y += -DCONFIG_CONCURRENT_MODE

# Reinstall driver
sudo ./remove-driver.sh
sudo ./install-driver.sh

# Verify dual interfaces are created
iw dev
# Should show: wlan0 and wlan1
```

--------------------------------

### Configure VHT Enable (rtw_vht_enable)

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Enable Very High Throughput (VHT/802.11ac) mode using `rtw_vht_enable`. Option 2 is required for 5GHz AP mode with hostapd. Options are disable (0), enable (1 - default), and force auto enable (2).

```bash
# VHT options in /etc/modprobe.d/8821cu.conf
# 0 = Disable VHT
# 1 = Enable VHT (default)
# 2 = Force auto enable (required for 5GHz AP mode)

# Standard VHT enabled (managed mode)
options 8821cu rtw_vht_enable=1

# Enable 80 MHz channels for AP mode
options 8821cu rtw_vht_enable=2
```

--------------------------------

### Check GCC Version Compatibility

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Compare the GCC version used for the kernel with the current system GCC version.

```text
gcc 12.1 (used to compile the kernel)
gcc 10.3 (version of gcc in use)
```

```text
gcc 12.2 (used to compile the kernel)
gcc 12.1 (version of gcc in use)
```

```bash
cat /proc/version
```

```bash
gcc --version
```

--------------------------------

### Enable 64-bit Kernel on Raspberry Pi

Source: https://github.com/morrownr/8821cu-20210916/blob/main/FAQ.md

If you encounter issues with kernel headers on Pi 4/400, add this line to /boot/config.txt to force the use of the 64-bit kernel.

```ini
arm_64bit=0
```

--------------------------------

### Configure RFE Type

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Set the RF Front-End type, essential for Bluetooth combo adapters.

```bash
# RFE type options in /etc/modprobe.d/8821cu.conf
# 0  = 2-Ant DPDT, 2G_WLG, 5G iPA/iLNA
# 1  = 1-Ant SPDT@Ant1, 2G_WLG
# 2  = 1-Ant SPDT@Ant1, 2G_BTG
# 3  = 1-Ant DPDT@Ant2, 2G_WLG
# 4  = 1-Ant DPDT@Ant2, 2G_BTG
# 5  = 2-Ant, 2G_WLG
# 6  = 2-Ant, 2G_WLG
# 7  = 1-Ant, 2G_BTG (try first for BT combo adapters)
# 64 = Default for WiFi-only adapters

# For WiFi+Bluetooth combo adapters (start with 7)
options 8821cu rtw_RFE_type=7

# For WiFi-only adapters
options 8821cu rtw_RFE_type=64
```

--------------------------------

### Check Secure Boot Status

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Verifies if UEFI Secure Boot is currently enabled on the system.

```bash
mokutil --sb-state
```

--------------------------------

### Configure hostapd AP Mode

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Set driver options and hostapd capabilities for 5GHz access point operation.

```bash
# Driver options for AP mode (/etc/modprobe.d/8821cu.conf)
options 8821cu rtw_drv_log_level=0 rtw_led_ctrl=0 rtw_vht_enable=2 rtw_power_mgnt=1 rtw_dfs_region_domain=1

# Example hostapd.conf settings for 5GHz AP
# HT capabilities (0x862)
ht_capab=[HT40+][HT40-][SHORT-GI-20][SHORT-GI-40][MAX-AMSDU-7935]

# VHT capabilities (0x03c00022)
vht_capab=[MAX-MPDU-11454][SHORT-GI-80][HTC-VHT][MAX-A-MPDU-LEN-EXP7]
```

--------------------------------

### Configure Monitor Mode

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Commands to switch the interface to monitor mode for packet capture.

```bash
# Check current interface mode
iw dev

# Set interface down
sudo ip link set wlan0 down

# Enable monitor mode
sudo iw wlan0 set monitor none

# Bring interface up
sudo ip link set wlan0 up

# Verify monitor mode is active
iw dev wlan0 info

# Capture packets with tcpdump
sudo tcpdump -i wlan0 -w capture.pcap
```

--------------------------------

### Configure DFS Region (rtw_dfs_region_domain)

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Enable Dynamic Frequency Selection (DFS) channels for AP mode using `rtw_dfs_region_domain`. Required for channels 52-144 in the 5GHz band. Options are NONE (0 - default), FCC (1), MKK (2), and ETSI (3).

```bash
# DFS region options in /etc/modprobe.d/8821cu.conf
# 0 = NONE (default - DFS channels disabled)
# 1 = FCC (United States)
# 2 = MKK (Japan)
# 3 = ETSI (Europe)

# Enable FCC DFS channels for US AP mode
options 8821cu rtw_dfs_region_domain=1
```

--------------------------------

### Update Driver Code

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Fetches the latest version of the driver code from the repository. This should be done before a distro upgrade to ensure you have the newest code.

```bash
git pull
```

--------------------------------

### Edit 8821cu Driver Options

Source: https://github.com/morrownr/8821cu-20210916/blob/main/FAQ.md

Run this script from the driver directory to easily edit the 8821cu.conf file. This is useful for troubleshooting WiFi issues with adapters using this chipset.

```bash
sudo ./edit-options.sh
```

--------------------------------

### Configure Beamforming Capabilities

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Adjust MU-MIMO beamforming settings for AP or managed client modes.

```bash
# Beamforming options in /etc/modprobe.d/8821cu.conf
# 1  = SU Beamformer (recommended for AP mode)
# 2  = SU Beamformee
# 3  = SU Beamformer and SU Beamformee
# 10 = SU Beamformee and MU Beamformee (default)
# 11 = SU Beamformer, SU Beamformee, and MU Beamformee

# For AP mode (as beamformer)
options 8821cu rtw_beamform_cap=1

# For managed/client mode (default - as beamformee)
options 8821cu rtw_beamform_cap=10
```

--------------------------------

### Manually Enroll DKMS MOK Key (Fedora)

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Manually enrolls the DKMS MOK key on Fedora systems when Secure Boot is enabled. This is a step required if automatic enrollment does not occur.

```bash
sudo mokutil --import /var/lib/dkms/mok.pub
```

--------------------------------

### Identify USB WiFi Adapter

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Lists USB devices to identify your WiFi adapter's Vendor and Device ID. This helps confirm chipset compatibility with the driver.

```bash
lsusb
```

```bash
# Example output: Bus 003 Device 011: ID 0bda:8811 Realtek Semiconductor Corp.
```

```bash
# Format: ID VendorID:DeviceID
```

```bash
# Supported Realtek default IDs:
# 0BDA:B82B, 0BDA:b820, 0BDA:C821, 0BDA:C820
# 0BDA:C82A, 0BDA:C82B, 0BDA:C811, 0BDA:8811
# 0BDA:2006, 0BDA:8731, 0BDA:C80C
```

```bash
# Supported vendor-specific IDs:
# 2001:331d (D-Link)
# 7392:c811 (Edimax)
# 7392:d811 (Edimax)
```

--------------------------------

### Configure Concurrent Mode in Makefile

Source: https://github.com/morrownr/8821cu-20210916/blob/main/docs/Concurrent_Mode.md

Modify the Makefile to enable the concurrent mode flag.

```makefile
#ccflags-y += -DCONFIG_CONCURRENT_MODE
```

```makefile
ccflags-y += -DCONFIG_CONCURRENT_MODE
```

--------------------------------

### Edit wpa_supplicant.conf on Raspberry Pi

Source: https://github.com/morrownr/8821cu-20210916/blob/main/FAQ.md

Use this command to edit the wpa_supplicant.conf file to manage WiFi network configurations. Replace ${EDITOR} with your preferred text editor.

```bash
sudo ${EDITOR} /etc/wpa_supplicant/wpa_supplicant.conf
```

--------------------------------

### Restrict Wireless Modes

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Force the adapter to operate on specific wireless standards or frequency bands.

```bash
# Wireless mode options in /etc/modprobe.d/8821cu.conf
# 1  = 2.4GHz 802.11b
# 2  = 2.4GHz 802.11g
# 3  = 2.4GHz 802.11b/g
# 4  = 5GHz 802.11a
# 8  = 2.4GHz 802.11n
# 11 = 2.4GHz 802.11b/g/n
# 16 = 5GHz 802.11n
# 20 = 5GHz 802.11a/n
# 64 = 5GHz 802.11ac
# 84 = 5GHz 802.11a/n/ac
# 95 = All modes (default)

# 2.4GHz only mode
options 8821cu rtw_wireless_mode=11

# 5GHz only mode
options 8821cu rtw_wireless_mode=84

# All supported modes (default)
options 8821cu rtw_wireless_mode=95
```

--------------------------------

### Configure ETSI DFS Channels

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Set the DFS region domain for European AP mode operation.

```bash
# Enable ETSI DFS channels for European AP mode
options 8821cu rtw_dfs_region_domain=3
```

--------------------------------

### Check Driver Module Status

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Verifies if the 8821cu kernel module is currently loaded on the system.

```bash
lsmod | grep 8821cu
```

--------------------------------

### Reboot System

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Restarts the system. It is recommended to reboot after updating system packages to ensure all changes take effect.

```bash
sudo reboot
```

--------------------------------

### Reset MOK list on Secure Boot failure

Source: https://github.com/morrownr/8821cu-20210916/blob/main/FAQ.md

If an incorrect password is entered during the MOK management screen, this command can reset the MOK list to allow booting. Restart and use the BIOS boot menu to access the MOK management screen again.

```bash
sudo mokutil --reset
```

--------------------------------

### Set Country Code

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Define the regulatory domain using ISO 3166-1 alpha-2 codes.

```bash
# Country code examples in /etc/modprobe.d/8821cu.conf
# Uses ISO 3166-1 alpha-2 codes

# United States
options 8821cu rtw_country_code=US

# United Kingdom
options 8821cu rtw_country_code=GB

# Germany
options 8821cu rtw_country_code=DE

# Japan
options 8821cu rtw_country_code=JP

# Australia
options 8821cu rtw_country_code=AU
```

--------------------------------

### Remove RTL8821CU Driver

Source: https://context7.com/morrownr/8821cu-20210916/llms.txt

Navigate to the driver directory and execute the removal script. Use 'NoPrompt' for non-interactive removal, which is recommended before distro upgrades or switching to in-kernel drivers.

```bash
cd ~/src/8821cu-20210916

# Remove the driver (interactive)
sudo ./remove-driver.sh

# Remove driver non-interactively (for scripts)
sudo ./remove-driver.sh NoPrompt
```

--------------------------------

### Set rtw_RFE_type Option for 8821cu

Source: https://github.com/morrownr/8821cu-20210916/blob/main/FAQ.md

Add this line to the options in 8821cu.conf to set the Radio Frequency Front-End type. Experiment with different values to find the best setting for your adapter.

```bash
rtw_RFE_type=7
```

--------------------------------

### Remove 8821cu Driver

Source: https://github.com/morrownr/8821cu-20210916/blob/main/README.md

Run this command to remove the 8821cu driver from this repository. This is necessary if you are switching to the in-kernel driver.

```bash
$ sudo sh remove-driver.sh
```

--------------------------------

### Disable Onboard WiFi on Raspberry Pi

Source: https://github.com/morrownr/8821cu-20210916/blob/main/FAQ.md

Add this line to /boot/config.txt to disable the onboard WiFi interface on your Raspberry Pi.

```ini
dtoverlay=disable-wifi
```

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