Comment 0 for bug 1066017

Unity secondary monitor menubar is an unconvenient setup for video art and gigs, and generally where the secondary display output is used with projectors in live shows.

While #907464 is aimed to mitigate this issue solving at least a problem with fullscreen apps, that's not really a "projection mode" where most people really want to display just black on the secondary monitor even when there's no app on that, no menubar and no notifications should be displayed there.