Excellent post from Aravisian, hope that is able to help. Also, I'd like to add more options available to you via Dconf editor GUI.
Hold CTRL
ALT
T
to enter terminal.
Type in....
sudo apt install dconf-editor
Enter your password when asked, then press the Y
key when prompted.
Launch Dconf, by clicking the
ICON lower left of screen, then just type DCONF, click on the app to launch.
Please navigate to......
org
, gnome
, settings-daemon
, plugins
, power
You can set things in here how you need them to be, but be careful, do not change anything that you do not know what it does, until you have done a Google search first, or asked us.
Hope this helps for future reference. I like Dconf, cause it gives me access to certain configurations in the OS, that can't be found elsewhere. While much of these can indeed be adjusted in terminal, its easier for me anyways, to use a GUI interface.