Hi, this is a bit veird, but after upgrading to -13 my server does not want to finish the booting process … when I connect the display I get the progress bar at the bottom (all white) with rockstor on the end) and that’s it … 30 minutes in and it’s still the same …
Performing a reboot with display connected - everything is smooth 
this time I don’t get a progress bar - just console ( counter intuitive 
) … another reboot without display = back to square 1 …
Today I’ve upgraded to -14 and got same problem.