Install xserver-xorg-video-siliconmotion by entering the following commands in the terminal:
sudo apt update sudo apt install xserver-xorg-video-siliconmotion
Description:
X.Org X server -- SiliconMotion display driver
This package provides the driver for the SiliconMotion Lynx and Cougar family of chipsets, commonly found in laptops. . This package is built from the X.org xf86-video-siliconmotion driver module.
Homepage: https://www.x.org
Version: 1:1.7.9-2ubuntu1
Section: universe/x11