Fabio:
I tryed your suggestion
xrandr --verbose --output LVDS --off
xrandr --verbose --output VGA --off
(before the line to change resolution.)
but I cannot confirm it to work.
Disabled my displays and because setting resolutioon after disabling displays wasnt accepted. So configuration reverted to displays off. Had to restart X.
Fabio:
I tryed your suggestion
xrandr --verbose --output LVDS --off
xrandr --verbose --output VGA --off
(before the line to change resolution.)
but I cannot confirm it to work.
Disabled my displays and because setting resolutioon after disabling displays wasnt accepted. So configuration reverted to displays off. Had to restart X.