Ok so I'm using a Samsung T220 22'' LCD Monitor combined with an ATI x1600EAXPRO video card. What the issue is i cannot get DVI to work. When I connect the monitor with VGA and boot (even to safe mode) I get a display but with DVI the monitor acts like nothing is connected and attempts to find a connection then just powers off because it cannot. If it also helps I do get full CI/QE when I install my kexts with the iPC 10.5.6 distro

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CPU: AMD Phenom II X4 945 3.0GHZ
Mobo: ASUS M4A785TD-M EVO
RAM: Patriot Viper DDR3 1066 4GB
Chipset: ATI 785G
Graphics: Sapphire HD4870 1GB PCIE, Radeon HD4200 OnBoard
LAN: Realtek RTL8111 Gigabit Ethernet Adapter