Troubleshooting system sleep in OS X
Generally it only takes a few seconds for a Mac to wake from or go to sleep, but there may be times when it either takes an exceptionally long time or when it will not wake or sleep at all.
If the system takes a long time to wake from sleep, it may be that it is just waking from a deep sleep mode. The computer's RAM cannot store data without power, so in standard sleep modes, RAM is kept active while the majority of the rest of the system is powered off. This allows for quick sleep and … Read more
