可以参考以下两个链接
https://community.tp-link.com/en/home/stories/detail/323
https://askubuntu.com/questions/1205360/unable-to-see-usb-wifi
其中下载了这个包:
执行以下几步:
cd ~/Desktop/rtl8812AU_8821AU_linux-master
make
sudo make install
sudo modprobe rtl8812au
sudo apt install dkms
git clone -b v5.6.4.2 https://github.com/aircrack-ng/rtl8812au.git
cd rtl8812au
make
sudo make install
sudo modprobe rtl8812au
如果不行,再拔插一下试试?