88x2bu ( 88x2bu.ko )

Linux Driver for the RealTek RTL8812BU and RTL8822BU Chipsets.

• Driver Version: v5.8.7.4 (Realtek)
• Plus updates from the Linux community

Supported Features:

• IEEE 802.11 b/g/n/ac WiFi compliant
• 802.1x, WEP, WPA TKIP and WPA2 AES/Mixed mode for PSK and TLS (Radius)
• WPS - PIN and PBC Methods
• IEEE 802.11b/g/n/ac Client mode
• Wireless security for WEP, WPA TKIP, WPA2 AES PSK and WPA3-SAE Personal
• Site survey scan and manual connect
• WPA/WPA2 TLS client
• Power saving mode
• AP Mode (WiFi Hotspot)
• Monitor mode
• WiFi-Direct

Supported Kernels:

• Kernels: 2.6.24 ~ 5.8 (Realtek)
• Kernels: 5.9

Supported Linux Distributions:

• Ubuntu - https://ubuntu.com/
• Mint - https://linuxmint.com/

Tested Linux Distributions:

• Mint 20
• Mint 19.3
• Ubuntu 20.10
• Ubuntu 20.04
• Ubuntu 18.04

Tested Hardware:

• EDUP EP-AC1605GS WiFi Adapter 1300Mbps USB 3.0 High Gain Wireless Adapter: https://www.amazon.com/gp/product/B07Q56K68T

Supported Devices:

• ASUS AC1300 USB-AC55 B1
• ASUS U2
• Dlink - DWA-181
• Dlink - DWA-182
• Edimax EW-7822ULC
• Edimax EW-7822UTC
• EDUP EP-AC1605GS
• NetGear A6150
• TP-Link Archer T3U
• TP-Link Archer T3U Plus
• TP-Link Archer T4U V3
• TRENDnet TEW-808UBM
• Numerous additional products that are based on the supported chipsets

DKMS:

This driver can be installed using DKMS. DKMS is a system utility which will automatically recompile and install a kernel module when a new kernel is installed. To make use of DKMS, install the dkms package. On Debian (based) systems, such as Ubuntu and Mint, installation is accomplished like this:

$ sudo apt-get install dkms

Note: The installation of dkms in Mint or Ubuntu will result in the installation of the various development tools and required headers, if not previously installed, so no addition action is necessary on these distros.

Installation of the Driver:

Note: The installation instructions I am providing are for the novice user. Experienced users are welcome to alter the installation to meet their needs.

Note: The quick way to open a terminal in Mint or Ubuntu: Ctrl+Alt+T (hold down on the Ctrl and Alt keys then press the T key.)

Note: My technique is to create a folder in my home directory to hold source packages. I call it src.

Create a folder to hold the downloaded driver file by first opening a terminal (Ctrl+Alt+T).

In the terminal, create the folder to hold the driver file:

$ mkdir src

Get the latest version of the driver from: https://github.com/morrownr/88x2bu

Download the driver by clicking on the green Code button.

Click on Download ZIP and save 88x2bu-5.8.7.4.zip in your src folder.

Upzip 88x2bu-5.8.7.4.zip. A folder called 88x2bu-5.8.7.4 should be created.

Open a terminal and enter the folder called 88x2bu-5.8.7.4:

$ cd ~/src/88x2bu-5.8.7.4

Execute the following commands:

$ sudo ./dkms-install.sh

$ sudo reboot

Removal of the Driver:

Open a terminal in the directory with the source code and execute the following commands:

$ sudo ./dkms-remove.sh

$ sudo reboot

Entering Monitor Mode with 'iw' and 'ip':

Start by making sure the system recognizes the Wi-Fi interface:

$ sudo iw dev

The output shows the Wi-Fi interface name and the current mode among other things. The interface name will be something like wlx00c0cafre8ba and is required for the below commands. I will use wlan0 as the interface name but you need to substitute your interface name.

Take the interface down:

$ sudo ip link set wlan0 down

Set monitor mode:

$ sudo iw wlan0 set monitor control

Bring the interface up:

$ sudo ip link set wlan0 up

Verify the mode has changed:

$ sudo iw dev

Reverting to Managed Mode with 'iw' and 'ip':

Take the interface down:

$ sudo ip link set wlan0 down

Set managed mode:

$ sudo iw wlan0 set type managed

Bring the interface up:

$ sudo ip link set wlan0 up

Verify the mode has changed:

$ sudo iw dev

USB 3 Support

I have included a file called 88x2bu.conf that will be installed in /etc/modeprob.d by default.

88x2bu.conf passes a parameter to the driver during boot that turns USB 3 mode on. The difference in performance can be large as can be seen in the data from the tests that I have conducted:

88x2bu without `88x2bu.conf` and driver v 5.8.7.2
 (average Bitrate = 255 Mbits/sec)

Transfer     Bitrate
30.9 MBytes   260 Mbits/sec
29.5 MBytes   247 Mbits/sec
32.6 MBytes   273 Mbits/sec
30.6 MBytes   256 Mbits/sec
30.4 MBytes   255 Mbits/sec
28.3 MBytes   238 Mbits/sec

88x2bu with `88x2bu.conf` and driver v 5.8.7.2
 (average Bitrate = 411 Mbits/sec)

Transfer     Bitrate
48.8 MBytes   409 Mbits/sec
47.5 MBytes   398 Mbits/sec
51.2 MBytes   430 Mbits/sec
48.8 MBytes   409 Mbits/sec
50.0 MBytes   419 Mbits/sec
47.5 MBytes   398 Mbits/sec

88x2bu with `88x2bu.conf` and driver v 5.8.7.4
 (average Bitrate = 552 Mbits/sec)

Transfer     Bitrate         Retr
66.2 MBytes   556 Mbits/sec    0
62.5 MBytes   524 Mbits/sec    0
67.5 MBytes   566 Mbits/sec    0
66.2 MBytes   556 Mbits/sec    0
65.0 MBytes   545 Mbits/sec    0
67.5 MBytes   566 Mbits/sec    0

That is over a 100% increase in performance by using the v 5.8.7.4 driver along with 88x2bu.conf!

See what your USB mode is:

$ lsusb -t

USB 2 = 480M

USB 3 = 5000M

Note: If there is a problem, delete 88x2bu.conf.

Enjoy