I have installed Ubuntu 16.04.3 .
I really appreciate your work, but I have followed your instructions and the connections fails.
At first it lasted about 15 minutes, but afterwards, and even rebooting the system the connection crashed at every minute!
I have been mentally blocked, and a friend told me to try an inexpensive USB wifi receiver that was compatible with Linux. In Amazon, I read the opinions from users and finally I have chosen 2 products:
- TP-LINK Model TL-WN823 (quite old fashioned but well tested, with only 2.4 GHz band with 300Mbs). I had to install Nothing ! Ubuntu recognized it immediately!. To my surprise it has a Realtek chipset, but worked fine! The only problem was that the wifi router should be not very far from the system!
- Meross AC600 Wireless USB adapter model WA255 from Victsing( Dual band.) . This was a risky decission, but I wanted a second chance! I had to go to www.meros.com/support and follow the instructions and downloaded Ubuntu drivers for Linux 4.X.beta developed by Ole Petter Bang in https://github.com/gnab/rtl8812au. Horror, another Realtek chipset! But works without any problem!
I have to refuse using the PCIe RTL8821ae from my Laptop, and no problems!