Mac Pro on High Sierra doesn't wake up? My Mac Pro (late 2013, cylinder), doesn't want to wake from sleep. I have not a clue what is going on (worked all fine with Sierra). 

Anybody?

Config:


MacPro 2013 (MacPro6,1) + 2x EIZO EV2450 (both via display-port)
Energy Settings: everything unchecked
Turn display of after 5 minutes


What I noticed:


Screens are in standby/sleep
I can hear the fan (still spinning)
Power button (on the back) is pulsating (yet fan is not silent?)


What I did:


Press power-button for 5 seconds
Start and try to zap PRAM 
Shutdown
Pulled power cable for 15 seconds
Plug cable (wait 5 seconds)
Start Mac.


update:

check your power-management settings:

// terminal
pmset -g live


My settings are (and seem to work for now):

 standby              1
 Sleep On Power Button 1
 womp                 0
 autorestart          0
 hibernatefile        /var/vm/sleepimage
 powernap             0
 gpuswitch            2
 networkoversleep     0
 disksleep            10
 sleep                5 (sleep prevented by sharingd)
 autopoweroffdelay    28800
 hibernatemode        0
 autopoweroff         1
 ttyskeepawake        1
 displaysleep         5
 standbydelay         10800


update 2:

For those running into these issues. Two more things you could try.


connect your keyboard (if you use usb wired) direct to your mac. Not via a hub or monitor
connect each monitor with a usb cable to your mac (this could trigger the wake event)
sudo pmset -a hibernatemode 0 


fixed the problem in my case.