Bug#1014782: xscreensaver: fails to activate via "Preview" button or via "Blank after" setting

[Jamie Zawinski]

No. There should be exactly one XScreenSaver package. So, so many problems have 
stemmed from this incomplete, broken installations as a result of this 
ridiculous extras-data-extras-gl-extras-extras nonsense. I am decades weary of 
hearing about them.