Thank you so much for the idea. This is a bit complicated, as no monitor connected to the server at this moment. We access it with ILO and Zoho Assist / Teamviewer (also have RDP connection from the internal network, but due to a special installation process the third-party application access had to be granted) A software is running on the server and that needs the full HD resolution.
Is there any way to force Windows to use different monitor driver instead of the generic pnp driver? (it supports only 32 bit color depth and I guess the Matrox supports full HD resolution in 16 bit only)
Will try to connect a monitor later today and test it with that (due to the location, it is a bit tricky)