I am yet another person having issues with the very vague video options for this mainboard.
I cannot get the Processor Graphics to work. Once windows gets to the login screen it goes black. It does not matter if I select VGA port or Display port in the bios. The screen will work without issue all the way up to the Windows login screen. Then I simply get a black screen. If I use 3rd party remote control software to connect to the machine, it shows only the P530 graphics controller in the device manager, and the Intel Tray icon appears. But the only screen the Intel Graphics settings detects is an "Intel Widi". The physical display is black though.
If I select "OnBoard Graphics" in the bios it works when booting to windows and I can see the login screen and can use the PC as per normal, but I am assuming I am using the Matrox Controller which is really slow.
My Intel Xeon Processor (E5-1225v5) supports processor graphics (P530).
Short Version:
When I select "Processor Graphics" in the bios the only device in the display section of device manager is a P530 Graphics controller and I get a black screen when I am supposed to get the windows login screen.
When I select "On Board Graphics" in the bios both the Matrox G200 and the Intel P530 are listed in the device manager and I can use windows without issue. (But slow graphics)
I have also noticed that when I use 3rd party remote access software, and I uninstall the graphics driver, the physical display shows up. But as soon as windows installs the display driver again, the screen goes black.
Intel, you are supposed to be a leader in technology - Why are you having issues like this??