Plugging in a Dual-Band WiFi adapter with the Realtek RTL8811AU chipset does nothing visible and it does not show up in
ifconfig even after a reboot.
Clearly the drivers must be installed separately.
--> I previously verified the precise model of adapter in Device Manager on a Win7 system using the same adapter. This is important because there are several types of RTL8811 chips.
The driver disk has a directory of Linux files on it that I do not recognize as working with Ubuntu.
Google leads here:
Ubuntu 16.04 8811AU Wireless driver (Medium.com)
which says to do this (paraphrased):
sudo apt-get update sudo apt-get install linux-headers-generic build-essential git git clone https://github.com/abperiasamy/rtl8812AU_8821AU_linux.git (Enter username and password for Github) cd rtl8812AU_8821AU_linux make sudo make install sudo modprobe 8812au
and all seems to work until that final command, where I get the error message
modprobe: FATAL: Module 8812au not found in directory /lib/modules/4.13.0-38-generic
None of the 5 GHz networks show up in the "up/down" WiFi settings.
Question: How to add RTL8811AU 802.11ac adapter for 5 GHz High-Speed WiFi