Funny enough, mine started to say "Display Disconnected" or something like that with just the Square logo on the customer side of the screen. We have to hand enter credit card sales now and that is costing us more money per transaction. (Weird Square. Huh? ; ) )

I think it may have been a software auto update that caused it because my neighbor next door has the same issue and it satrted on the same day. Display reconnects SOMETIMES after physically disconnecting / reconnecting it, rebooting, etc., but doesn't STAY connected for long. Hope this helps everyone.

Some on Square. You're a great company. How could you let this happen? Let's get this fixed asap please. Also it would be great if you could admit to us that you are aware of the issue. You know, be transparent? Thanks.

Our shop has been experiencing this same issue with a customer display connected by usb to our Square Register.  Initially, it only occurred once in a while after a nightly auto-update.  We rebooted the system and it would correct it.  Now, it is happening randomly during the day, 3 or 4 times a week--which is maddening when you're trying to complete a sale and can't dip or swipe credit cards.   We should not have to reboot the system multiple times a day--as well as having to pay the higher percentage cc fee because that piece of hardware stops working during a sale, forcing us to manually enter it. We need a solution to this.