I am trying to set the screen timeout so that the computer does not timeout during transfer of a large file. How do I set the screen timeout?
System Settings from the icon located on the far right in your top panel. Once there select the
Brightness & Lock settings. It will look as I've shown below. Change the "Turn screen off when inactive for" to
never, and change the "Lock Screen" switch to
In 18.04 it looks like this...