It takes my new Mac Mini about 15 seconds to wake up from sleep. Since I'm used to almost instant wakeup on other OS's, I've been looking into this. What I've tried: 1. Set hibernatemode to 0 (was 3), supposed to be the default for a desktop. Did not help. 2. Used safe boot to look at behavior there, no difference. 3. Reset SMC. No difference. After a lot of looking around and not finding anything helpful, decided to turn off sleep by setting "sleep" to 0 using pmset. This speeds up wake up to a large degree, takes about 3 seconds to wake up the monitor, but I want the computer to be able to sleep for energy conservation if nothing else. And it should by all rights, be able to wake up from sleep quickly. A little information...this Mac Mini is the i7-based one, with 8GB of memory and 256GB SSD. Along with a 500GB external SSD. OS version is 10.14.4. The monitor is connected via a Thunderbolt to minidisplayport cable. Nothing exotic, pretty much vanilla hardware and software configuration. Got no idea what's taking all the time for wakeup, since the computer is otherwise lightning fast. Any suggestions from those that have more experience with the OS? Would really like this to work as it should, but haven't found the right setting(s) yet. Thanks!