This repo is the source code of the wifi driver which supports RTL8852AU chipset. And this code has been tested on Ubuntu20.04 kernel version under 5.15 (5.15 not work right now, you can use uname -u to check the kernel version). And this version has fixed some bugs comparing with other internet versions.
Firsty, you should disable the secure boot. You can use following command to check the status of secure boot. If it is still enable, go to BIOS mode and disable it.
mokutil --sb-stateThe installation script is written for bash. And the default mode of ubuntu terminal is dash. Thus, remember use bash and root.
sudo bash ./install.bash