looks like ubuntu is carrying some strange patches which I suspect are to blame. Can you try with ati git master?
Also, if you don't want to use LVDS, turn it off: xrandr --output LVDS --off
looks like ubuntu is carrying some strange patches which I suspect are to blame. Can you try with ati git master?
Also, if you don't want to use LVDS, turn it off:
xrandr --output LVDS --off