Quote Originally Posted by LeTempsDuLoup View Post
It's very confusing that the various Realtek 88XX drivers on GitHub support many chipsets, but rarely specify exactly which are not supported. My chipset is indeed RTL8811AU and most RTL8812AU/21AU drivers should support it.

UPDATE: I've had partial success compiling https://github.com/aircrack-ng/rtl8812au (v5.6.4.2) and installing the driver via DKMS. The device only works with 2.4GHz and isn't dual-band. There are many, many forks so hopefully I'll eventually find a project which will also allow me to use 5GHz with my device.
ILL you need RTL8821 drivers, not RTL8812.

{USB_DEVICE(USB_VENDER_ID_REALTEK, 0x0811),.driver_info = RTL8821},/* Default ID */