I don't know a single airplane that does that and I've flown quite a few types. It's normal to have error detection and the way to show it is to cross out (red

I don't know a single airplane that does that and I've flown quite a few types. It's normal to have error detection and the way to show it is to cross out (red lines, black background) the failed information on the screen. Not blank the whole thing. The units are fairly independent in a modern system, communicating via data buses. So this sounds like a case where the bug made a unit emit something really bad on that bus to make them all go blank.