dualhead: turning off a specific head

[Michael Pujos]

Hi!

I have configured dualhead (not xinerama, two independant desktop).

screen #0: laptop LCD, 1440x900
screen #1: TV, 800x600

My problem is that i'd like to turn off the LCD screen when I'm using the TV 
only to watch videos. If it was an external monitor I could just turn off the 
power button but there isn't any :(
"xset dpms force off" will turn off both screens. Is there any solution to 
turn off individual heads ? is it planned ?