Evdev Ubuntu 20.04 Step-by-step Installation

Setting Up

2. 2. Installing evdev

   Then Install evdev in Ubuntu Focal
   Just run:

   sudo apt install xserver-xorg-input-evdev

   And for an evdev Device’s Button Mapping setup also:

   sudo apt install xserver-xorg-input-libinput xserver-xorg-input-mouse

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo.
   Then you may have to Enable it by placing the Configuration File in the right place like:

   sudo cp /usr/share/X11/xorg.conf.d/10-evdev.conf /etc/X11/xorg.conf.d/

   In this case then Reboot with:

   sudo reboot