To adjust the “sleep” power manager settings in OS X, drag this slider around. To set it to 0, drag the slider to the “Never” position.
Energy Saver system preferences in OS X
EnergySaverSleepSlider
MacIssues
How to use, troubleshoot, and repair your Mac
I have a question, where did all those extra settings come from? I’m using the latest version of Yosemite and my Energy Saver panel doesn’t look like that at all! I’m missing the Prevent computer…. and the Enable Power Nap…. Also I have 2 sliders- one for Computer Sleep and one for Display sleep, and mine does not say Turn display off after:
also when I drag the slider to Never, I get a yellow triangle warning!! is this because I have an older Macbook Pro? I shouldn’t think that would make a difference. — too back there’s no place to add an attachment here.