Step-by-step – Realtek Rtl8723BU Driver Ubuntu 18.04 Installation

Downloading

2. 2. 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.

3. 3. Downloading Realtek rtl8723BU Driver

   Download Realtek Driver for Ubuntu GNU/Linux

   Get Realtek rtl8723BU Driver for Ubuntu

   Realtek Driver Source Realtek for Ubuntu

   Especially relevant: this guide follow only the original Lwfinger Setup, for the others Variants see directly the Developer GitHub Page!

4. 4. Extracting Realtek rtl8723BU 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