I have a late 2013 MBPr. After I close the lid and open it back up, the screen is supposed to come on exactly how I left it. Sometimes, at least 1-2 times a day, the screen is just black and all I see is the cursor. After maybe 15 seconds then the screen will come back. I do have a passcode set on my machine to come on after 1 minute. I have changed it to 15 minutes to see if that helps. Anyone can help me?