I have a new 2015 Macbook Air stock 13 inch I got about 4 months ago. Sometimes, and only sometimes, this thing will not wake from sleep for a LONG time. 15 minutes to an hour. Absolutely everything else works just fine. Recently it took 5 days (yes five days) to wake from sleep. I had a brick with me for the holidays. Now that I'm finally home and have access to an Apple store to take it in, I cannot replicate this problem. For a whole day it has worked fine in and out of sleep like there was never an issue. If I cannot replicate the problem, I'm not sure about taking it in. Anyone know whats going on here? --- Post Merged, Jan 8, 2016 --- Oh I also already reset the SMC and PRAM.