I would also like to thank you and report everything working OK. My system is a DELL E6510 with updated Kubuntu 11.04 Running the suggested Kernel from #185 solved the problem for me. External Monitors are working too as they did with former versions of Kubuntu. My system is connected to a DELL docking station. Internal LCD is @ eDP1 -> external Monitor via DVI is @HDMI3 No problems during Kernel installation. Desktop Effects also working -> but at poor performance. Overall it is a huge step into the right direction -> thank all of you for your great work making linux useful :) regards Chewie 2011/2/18 Nischal Rao