sudo pluma /usr/share/X11/xorg.conf.d/10-evdev.confpluma is the name of editor in Linux Mint so if your system uses another one or you prefer another editor replace its name (ie. nano)
Find the section in file related to touch screen and comment it like this:
#Section "InputClass"Save the file and exit editor after commenting the related section. Restart your computer and after now you should be running your device with touch screen disabled.
# Identifier "evdev touchscreen catchall"
# MatchIsTouchscreen "on"
# MatchDevicePath "/dev/input/event*"
# Driver "evdev"