Was the black screen issue after the software update? My car updated last night and I had a black screen this morning when I first went into the car. I rebooted the screen by pushing both buttons on the steering wheel for a few seconds and that seemed to fix it.
This was when I was on 2018.18.13, which is what the car was on when delivered. Last night it updated to 2018.21.9 and so far so good, though my back up camera didn’t work one time this morning.