The Energy Saver preference pane controls the basic sleep functions. We’re also going to look at problems entering sleep, as well as the various sleep options available for both desktop and portable Macs. Of course, that’s not the only sleep-related problem we’re going to explore in this Rocket Yard guide. “To sleep, perchance to dream ay, there’s the rub.” While neither Hamlet nor Shakespeare had computers available, the famous line from Hamlet’s soliloquy does describe a problem many Mac users have experienced: their Macs being in such a sound sleep that they fail to wake, perhaps enjoying their dreams just a bit too much.