I can't seem to get my U2711 to full HD over a passive DP-DVI converter (yeah, I know it's strange! And I do also run full resolution over both DP, dual-link DVI and HDMI). Even after installing a proper screen driver, it wont go beyond 1600*1200 (and I need full-HD)... (Both windows and Intel utils say custom resolutions are not supported - and do not offer FullHD as a listed resolution)

Does anyone have a clue what I might be missing here? Thanks for any input.