09-28-2018 02:46 PM
I an configuring a ThinkPad x240 for a ProDock with two displays connected to the ProDock. I have 3 displays available; VGA, HDI and DisplayPort of which I will use some combination of two. At present, none of them are recognized when the x240 is docked, either indivdually or in combination. The VGA on the 240 works fine when undocked but otherwise there is no video. I have swapped out the ProDock, tried each display individually, updated to the latest UEFI version, and checked the UEFI configuration to no avail. Does anyone have any thoughts?