Monitor went to sleep before specified time

[Chris 2180]

Hello, my monitor went to sleep after about 30 minutes of being idle when it should gonto sleep in an hour, I was able to wake it up jus by moving my mouse. Why did this happen?
Specs
R9 280
I5 4590
8gb ram
Windows 10

 

[gangrel]

Double check your power settings. Settings, System, Power. There are 2 settings...one for turning off the monitor, one for sleeping the whole system. Mouse move is enough to do either level of wakeup.