I'm trying to use an auxiliary LCD as a light-pad/bed/table by loading up a 1080p white .PNG in preview and setting fullscreen ON.
The problem is after several (20?) minutes of inactivity I get the Apple screensaver kicking in, and then have to enter my password.
How to prevent this?
Nothing in System Prefs -> Energy Saver works.
http://osxdaily.com/2011/03/21/temporarily-prevent-a-mac-from-sleeping/ suggests pmset noidle but that's also fails.
Best Answer
Screen Saver is under System Preferences > Desktop & Screen Saver > Screen Saver, not System Preferences > Energy Saver. Simply navigate to this preference pane, then in the bottom left corner, select the Start after: menu and choose Never.