Then, run the following commands:
cd ~/TouchUI-autostart/ git pull sudo service touchui restart
If you made changes to your TouchUI files previously before and receive a
pull error, run the following:
git reset --hard
Edit the TouchUI default file using the Nano editor:
sudo nano /etc/default/touchui
DISABLE_SCREENSAVER=true. Then, press CTRL-X to exit and then Y to save.
Finally, restart the TouchUI service:
sudo service touchui restart
You're all done! NO MORE SLEEP... PRINT THINGS FOREVER.
While making this guide I ran into many Ender 3 V2-specific bumps and stops, and I've worked through them all so you don't have to spend the time.