Install xserver-xorg-input-mouse by entering the following commands in the terminal:
sudo apt update sudo apt install xserver-xorg-input-mouse
Description:
X.Org X server -- mouse input driver
This package provides the driver for mouse input devices. It is mainly used on non-Linux operating systems such as BSD and Solaris. Most configurations on Linux will use evdev, the kernel's event delivery mechanism, and do not need this package. . See the inputattach package if your mouse is not automatically detected by the Linux kernel, for example because it is a serial mouse. . More information about X.Org can be found at:
Version: 1:1.9.2-1
Section: universe/x11