If this setup works off the SP3s port and not off the docks port it seems fairly obvious...
I'm not impressed by the level of difficulty experienced across the industry with DP devices though... seems like something is amiss in the standard for there to be so many problems. maybe it will all work better when we get to displayport 2.0 or 3.0
I agree. Until there is an good reason to move to a technology that fairly new to Windows, I will stick with HDMI or DVI. I'm reading about too many problems with some working and some not to move in that direction.