Hi - I just received my 2018 i5 mac mini a few days ago. I've been having problems with it displaying anything after waking from sleep. Every time I wake up the computer from sleep, the monitor is blank. The monitor backlight comes on when I wake the computer, but it's just a backlit black screen. I keep on trying various keys on the keyboard, or mouse and eventually it displays the screen. That too, not always. Sometimes even despite trying for 5-10 minutes the screen stays blank. I just have to force restart the computer. I am using Acer monitor XB271HU, and have it connected via HDMI. I does seem like it's trying to perform the HDMI handshake but fails. Cause every time I press a key on the keyboard or mouse, the screen flickers or the backlight goes off and on for a quick moment. But most of the time the screen stays blank. I've had this monitor for over a year now, and never had this problem with my previous computer. So I am pretty sure it's not the monitor. The monitor does have a 'Deep Sleep' setting, which I have set to OFF. Things I've tried so far - 1. Tried with a different HDMI cable. 2. Reset the computer's NVRAM by pressing Alt-CMD-P-R on start-up 3. Reset the SMC by simply shutting it off and taking out the power cable. None of these things seem to work. Is anyone else experiencing this issue? Any solutions? Thanks.