I have two Dell U2412M Monitors and wish to have them both connected digitally to both my laptop (Dell Latitude E6420 running Windows 7 Enterprise via my E-Port Plus docking station) and PC (Dell OptiPlex 7010 MT running Windows 7 Professional via an ATI FirePro 2450 configured to support two dual link DVI-D ports). With both monitors I can use either the VGA or DVI port but I cannot use a monitor's DisplayPort to a DVI port on either the docking station or the PC (I don't have a DisplayPort to DisplayPort cable). I have tried a DisplayPort to dual link DVI-D cable and both a single link and dual link DVI-D cable with a BizLink dual link DVI-D to DisplayPort adapter. Neither the laptop nor the PC is able to detect either monitor using any of those combinations. Can anyone shed any light on why?
Thanks