The xinput solution did not work for me. I instead followed the instructions in this thread. This will disable it at boot time.

1. Edit /usr/share/X11/xorg.conf.d/10-evdev.conf
2. Add Option "Ignore" "on" to the end of the section with the touchscreen identifier
3. Reboot

• For the record (Google), I have a Samsung Series 7 and my touch screen was listed as ELAN Touchscreen in xinput.
• JFTR too, in this question says the power consumption difference is mostly negligible.

Edit file the file with

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

Change MatchIsTouchscreen from "on" to "off" in the Touchscreen section so it looks like this:

Section "InputClass"
    Identifier "evdev touchscreen catchall"
    MatchIsTouchscreen "off"
    MatchDevicePath "/dev/input/event*"
    Driver "evdev"
    EndSection

Save, Name and Exit

Touchscreen is disabled and no longer detected in xinput list.

In order to disable the touchscreen on Ubuntu 19.x and 20.x you can:

• Wait the login screen
• Press Alt+F2
• Edit the "libinput" configuration and disable the touchscreen section, like that:

sudo nano /usr/share/X11/xorg.conf.d/40-libinput.conf 

# Match on all types of devices but joysticks
#
# If you want to configure your devices, do not copy this file.
# Instead, use a config snippet that contains something like this:
#
# Section "InputClass"
#   Identifier "something or other"
#   MatchDriver "libinput"
#
#   MatchIsTouchpad "on"
#   ... other Match directives ...
#   Option "someoption" "value"
# EndSection
#
# This applies the option any libinput device also matched by the other
# directives. See the xorg.conf(5) man page for more info on
# matching devices.

Section "InputClass"
        Identifier "libinput pointer catchall"
        MatchIsPointer "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
EndSection

Section "InputClass"
        Identifier "libinput keyboard catchall"
        MatchIsKeyboard "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
EndSection

Section "InputClass"
        Identifier "libinput touchpad catchall"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
EndSection

#Section "InputClass"                               <----
#        Identifier "libinput touchscreen catchall" <---- this one
#        MatchIsTouchscreen "on"                    <---- put # in
#        MatchDevicePath "/dev/input/event*"        <---- front of
#        Driver "libinput"                          <---- every line
#EndSection                                         <----   

Section "InputClass"
        Identifier "libinput tablet catchall"
        MatchIsTablet "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
EndSection

My "Dell Inspiron" touchscreen was broken. The cursor moved all over the place and click in random places several times a second. I was unable even to make login on the gnome or even to access the bios.

As id for xinput changes on reboot, I added a simple one-line screen on session load:

#!/bin/bash
xinput --list | awk '/Atmel Atmel maXTouch Digitizer/ {print $7}' | awk '{split($0,a,"="); print a[2]}' | xargs xinput disable

My device's name is "Atmel Atmel maXTouch Digitizer", change that with your device (use xinput --list for device name).

If your touchscreen is a touch panel screen like a USB monitor, you can add default kernel driver usbtouchscreen into modprobe's blacklist file (/etc/modprobe.d/blacklist.conf) and use your custom driver such as touchkit or evtouch.

As @romaia's answer here shows, xinput is indeed the right way to do it.

However, I like to write a script and attach calling this script to a Ctrl + Alt + P keyboard shortcut, to make this super easy. Now I get an auto-closing window like this when I use this shortcut the first time:

...and if I use the shortcut again:

Ah, beautiful! Now I can easily enable/disable my touchpad or touchscreen, and fix mouse scroll speed, all with a single easy-to-use keyboard shortcut!

Get the latest version of this script here: .

Here's a snapshot of it at this moment:

#!/bin/bash

# This file is part of eRCaGuy_dotfiles: 

# toggle_touchpad.sh
# - toggle the touchpad & touchscreen on and off, and enable/disable imwheel to fix scroll speed when using a mouse
#   instead of the touchpad

# Gabriel Staples
# Started: 2 Apr. 2018 
# Update History (newest on TOP): 
#   28 Jan. 2020 - added in lines to disable Touchscreen too, as well as show ID numbers of 
#                  Touchscreen & Touchpad
#   22 June 2019 - added in the imwheel stuff to not mess up track pad scrolling when
#                  track pad is in use

# References (in order of progression):
# 1. negusp described xinput: 
# 2. Almas Dusal does some fancy sed stuff & turns negusp's answer into a script: 
# 3. I turn it into a beter script, attach it to a Ctrl + Alt + P shortcut, & do a zenity GUI popup window as well:
#    
# 4. I add imwheel to my script to also fix Chrome mouse scroll wheel speed problem at the same time:
#    
# 5. I put this script on Github, and posted a snapshot of it on this answer here: 
#     

# `xinput` search strings for these devices
# - Manually run `xinput` on your PC, look at the output, and adjust these search strings as necessary for your 
#   particular hardware and machine!
TOUCHPAD_STR="TouchPad"
TOUCHSCREEN_STR="Touchscreen"

read TouchpadId <<< $( xinput | sed -nre "/${TOUCHPAD_STR}/s/.*id=([0-9]*).*/\1/p" )
read TouchscreenId <<< $( xinput | sed -nre "/${TOUCHSCREEN_STR}/s/.*id=([0-9]*).*/\1/p" )
echo "TouchpadId = $TouchpadId" # Debug print
echo "TouchscreenId = $TouchscreenId" # Debug print

state=$( xinput list-props "$TouchpadId" | grep "Device Enabled" | grep -o "[01]$" )

PRINT_TEXT="Touchpad (ID $TouchpadId) &amp; Touchscreen (ID $TouchscreenId) "
if [ "$state" -eq '1' ];then
    imwheel -b "4 5" # helps mouse wheel scroll speed be better
    xinput --disable "$TouchpadId"
    xinput --disable "$TouchscreenId"
    zenity --info --text "${PRINT_TEXT} DISABLED" --timeout=2
else
    killall imwheel # helps track pad scrolling not be messed up by imwheel
    xinput --enable "$TouchpadId"
    xinput --enable "$TouchscreenId"
    zenity --info --text "${PRINT_TEXT} ENABLED" --timeout=2
fi

References (in order of progression):

1. negusp described xinput: Enable/disable touchpad
2. Almas Dusal does some fancy sed stuff & turns negusp's answer into a script: Enable/disable touchpad
3. I turn it into a beter script, attach it to a Ctrl + Alt + P shortcut, & do a zenity GUI popup window as well: Enable/disable touchpad
4. I add imwheel to my script to also fix Chrome mouse scroll wheel speed problem at the same time: Permanently fix Chrome scroll speed
5. I put this script on Github, and posted a snapshot of it on this answer here: How do I disable the touchscreen drivers?
6. Get the latest version of this script here!