I have an HP elitebook 8560W with firepro M5950, which is supposed to output up to 2560x1600 via its dispalyport 1.2, but the maximum resolution I can output at a 4k display I have connected is 1920x1080. When I try it I have active only the external display (no output on the laptops display).
Any ideas why and how I could solve it?
Windows 7 Home Premium
16GB or RAM