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rtl8812au (8812au.ko)

Realtek RTL8812AU Wireless Lan Driver for Linux

• v5.13.6 (20210629)
• Based on EDIMAX EW-7822UAC Linux Driver (Version : 1.0.4.1) 2021-09-17
• Support Kernel: 4.4 - 5.11 (Realtek)
• Support up to Kernel 5.18

Added

• Support for Raspberry Pi
• LED control
• Devices, which is compatible with this driver

Enable

• Monitor mode (resolves a fixed channel 1 issue.)
• Packet injection
• REGD source selection

HOW TO

Install

Download source:

git clone https://github.com/ivanovborislav/rtl8812au.git
cd rtl8812au

Install missing packages:

sudo apt-get install bc build-essential

Install linux headers:

sudo apt-get install linux-headers-$(uname -r)

or

apt-cache search linux-headers
sudo apt-get install linux-headers-5.14.0-kali4-amd64 (for example)
apt-cache search linux-image
sudo apt-get install linux-image-5.14.0-kali4-amd64 (for example)

Compile:

make
sudo make install

Raspberry Pi:

Edit Makefile:

Ln141 - CONFIG_PLATFORM_I386_PC = y to CONFIG_PLATFORM_I386_PC = n

Ln142 - CONFIG_PLATFORM_RPI_ARM = n to CONFIG_PLATFORM_RPI_ARM = y for ARM

or

Ln143 - CONFIG_PLATFORM_RPI_ARM64 = n to CONFIG_PLATFORM_RPI_ARM64 = y for ARM64

Monitor mode

sudo airmon-ng check kill
sudo ip link set <interface> down
sudo iw dev <interface> set type monitor
sudo ip link set <interface> up

Managed mode

sudo ip link set <interface> down
sudo iw dev <interface> set type managed
sudo ip link set <interface> up
sudo systemctl restart NetworkManager (sudo service network-manager restart)

TX power control

Note: Set TX power before start SoftAP mode. ...set txpower fixed 3000 = txpower 30.00 dBm.

sudo iw dev <interface> set txpower fixed 3000

Driver options

Change driver options during inserting driver module

Remove (unload) a module from the Linux kernel.

sudo rmmod /lib/modules/$(uname -r)/kernel/drivers/net/wireless/8812au.ko

Insert (load) a module into the Linux kernel.

sudo insmod /lib/modules/$(uname -r)/kernel/drivers/net/wireless/8812au.ko rtw_ips_mode=1 rtw_drv_log_level=4 rtw_power_mgnt=2 rtw_led_ctrl=1

Change driver options loading from file

Create a file 8812au.conf containing options 8812au rtw_ips_mode=1 rtw_drv_log_level=4 rtw_power_mgnt=2 rtw_led_ctrl=1. Copy a file to /etc/modprobe.d/ directory.

sudo cp -f 8812au.conf /etc/modprobe.d

Power saving control.

IPS (Inactive Power Saving) Function, rtw_ips_mode=

0:Disable IPS
1:Enable IPS (default)

LPS (Leisure Power Saving) Function, rtw_power_mgnt=

0:Disable LPS
1:Enable LPS
2:Enable LPS with clock gating (default)

Driver debug log level control, rtw_drv_log_level=

0:_DRV_NONE_
1:_DRV_ALWAYS_
2:_DRV_ERR_
3:_DRV_WARNING_
4:_DRV_INFO_ (default)
5:_DRV_DEBUG_
6:_DRV_MAX_

Driver LED control, rtw_led_ctrl=

0:led off
1:led blink (default)
2:led on

Driver VHT control, rtw_vht_enable=

0:disable
1:enable (default)
2:force auto enable (allow width: 80 MHz, AP mode)

Driver wireless mode control, rtw_wireless_mode=

1: 2.4GHz 802.11b
2: 2.4GHz 802.11g
3: 2.4GHz 802.11b/g
4: 5GHz 802.11a
8: 2.4Hz 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: 2.4GHz 802.11b/g/n 5GHz 802.11a/n/ac (default)

Driver REGD source selection, rtw_regd_src=

0:Realtek defined
1:OS (default, get channel plan from OS)

Add support rtl8821AU to rtl8812AU v5.13.6 driver (support chipset RTL8812AU, RTL8821AU, RTL8811AU)

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