What happened to detect displays? I'm running Mountain Lion with a retina MacBook Pro with three external monitors attached.  Quite often, one or more of the monitors blacks out.  Normally, I would choose "detect displays" in the displays menu or system preference, but I just found that that button is no longer there.  Furthermore, the displays menu is gone as well!  I found it in /System/Library/CoreServices/Menu Extras, but when I double clicked it, it didn't open.

So I guess I really have two questions:


Is the displays menu dead?  Or did I break my computer somehow? I don't terribly miss it, other than the detect displays command (I never change the resolution from the default).
More importantly, how can I execute a "detect displays"?  A terminal command would be fine.
From Apple KB Article HT5369:


  If the detect displays option is not available, hold down the ⌥ alt/option key while you are in the Display pane.


It should morph the "Gather Windows" button into the "Detect Displays" button.

Stupid change, isn't it?