Hey, so I've had this issue for a couple of weeks, hadn't really bothered me until recently though. My Macbook isn't going to sleep. I've had it to go to sleep in 15 mins. of inactivity but I've noticed when I am away for a while and comeback only the display is off. I logged out and tried it on my "Troubleshooting" account which has everything at the default settings came back an hour later and it wasn't asleep. Right now I changed the sleep time to one minute and only the display shut off. I don't have any background apps running (that I am aware of) the only thing I could think of is bowtie but I quit that before I tried sleeping it right now. Oh and I also tried the command+option+p+r at the startup.