So this is a last, desperate attempt to find a solution to a relatively recent GNOME annoyance before I just give up on the whole thing.

When GNOME 3.8 thinks you've been idle for a while, it blanks the screen, which is all fine and good and desirable.  But then, once you come back, after you've gotten its attention somehow, it presents you with a sliding curtain thing that must be swiped out of the way before you can start working.  As far as I can tell, this curtain serves no useful purpose whatsoever, it just adds another ritual that I have to go through many times each day in order to get my work done.

A search on the net suggests that I'm far from the only one looking for a way to turn this thing off.  But the only solution appears to be to disable screen blanking altogether, which is not what I want to do.

Surely the GNOME developers aren't so hostile to their users that they would make it impossible to get rid of this extra hassle...right...?  So what's the secret?
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