energy saver-sleep mode
My new iMac desktop only goes to sleep if I press the power button and choose that option. I tried the energy saver to change that but that doesn't seem to work. I want it to sleep automatically after 15 min. of non-use.
Question marked as
First reset the SMC, as per > How to reset the System Management Controller (SMC) on your Mac - Apple Support
Then study > Use the Energy Saver settings on your Mac - Apple Support to see if you have the other energy saver settings like "put disk to sleep" and "power nap" setup correctly to achieve your end goal.