How to control mode entered after specific inactivity time?
My search attempts likely failed because I didn't know the appropriate
terms.
After some initial inactivity the screen blanks and can can be brought
back to life by mouse movement.
After a longer period of inactivity one must touch the power button.
What are the correct names for these states?
How does a user (preferably not root) control the timing of entering
these states?
I know that I've reset them because the defaults were inconvenient. Now
they are inappropriate. I'm using Debian 9.8.
TIA
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