I'm running an older MBP, but after updating to 10.11.1, my Mac's sleep behavior is strange. If I close the lid, the light in the front (white led), stays on full brightness, when I open the lid, it takes a few seconds longer than I remember for the screen to come back. It's supposed to fade in and out like a heartbeat. Also, if I shut down, it seems if I close the lid right away, I get the solid LED, as if it wasn't fully shut down yet. I tried a SMC reset, nothing.