GNU/Linux Ubuntu Realtek rtl8821AU Driver Setup Guide
Hi! The Tutorial Shows You Step-by-Step How to Install Realtek rtl8821AU WiFi Driver in Ubuntu GNU/Linux Distribution.
Especially relevant: this Realtek rtl8821AU Driver Ubuntu Setup should be working also after a Kernel Upgrade with the Dkms integration.
Finally, from the Realtek Support Driver Website comes out that it may be working for all the following Chipsets: