I was sitting here and it finally dawned on me
what the hell it was all this time....
SO, after racking my brain looking for a most sophisticated 
and complex answer i over looked the obvious  
on this machine it was the screen saver set to ten minutes 
and since i don't use screen savers because they are always
running in the background....  it always reverted to the dark screen.
problem solved... 
 and once again ...i learned to look for a simple solution. 
