My Apple Cinema Display just stopped working on new Mac Pro
I have a new Mac Pro (2013). It's teriffic, but all of a sudden, for no particular reason, my 27" cinema display just stopped working! The computer boots up like always, the thunderbolt cable, USB cable, and power supply are all plugged in (as before, when it was working this morning - and I've changed USB ports and outlets just to make sure it wasn't that problem) and no joy. The computer boots up, but the display remains off (black screen). Any suggestions?
Mac Pro (Late 2013), OS X Mavericks (10.9.2)