Step-by-step – Linux Mint 18 Realtek Rtl8812au Driver Installation

Downloading

3. 3. Installing Dependencies

   Then to Install Required Packages
   First, preferably Upgrade your System with:

   sudo apt update && sudo apt upgrade

   In this case then Reboot it using:

   sudo reboot

   Then run:

   sudo apt install build-essential linux-headers-$(uname -r) dkms unzip git

   Authenticate with the User Admin Pass.

4. 4. Downloading Realtek rtl8812AU Driver

   Download Realtek Driver in Mint GNU/Linux

   Get Realtek rtl8812au Driver in Mint

   Realtek Driver Source Realtek for Mint

   Choose to ‘Save It’!

5. 5. Extracting Realtek rtl8812AU Driver

   And then Extract Driver Archive into /tmp
   (Skip in case of Git Checkout)
   Possibly Double-Click/Right-Click on Package and Open with Archive Manager:

   
   Or from Command Line:

   unzip -d /tmp/ ~/Downloads/*master.zip

   (But if you are in Trouble to Find the Location on Terminal then See: How to Access Downloads Folder from Browser.)