I have a 2015 rMBP and it gave me trouble when I got it when it would go to sleep for say 15 minutes I couldn't login. I had to force shutdown. Sometimes I would be able to login but nothing would work, and I would get the beachball of death and needed to force shutdown. I did a repair and fix permission and the problem went away. I am now having the same problem again, but this time the repair and fix permissions are not doing anything. I haven't dropped it or anything. Anyone have this problem?