I just got a Samsung 243T with Nvidia Geforce 6600GT (this connection is over DVI). When setting up FC4 , the highest resolution I can choose is 1680x1050. One thing FC4 is doing is that it is using the "vesa" driver by default for my card instead of the "nv" driver. But even once I do select the nv driver in the GUI I still don't see 1920x1200 as a selectable resolution. Going into xorg.conf and puting 1920x1200 as a resolution solves the problem & I X works in 1920x1200. "lscpi -nv" outputf for my video card: 01:00.0 Class 0300: 10de:00f1 (rev a2) Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 5 Memory at f8000000 (32-bit, non-prefetchable) [size=16M] Memory at e0000000 (32-bit, prefetchable) [size=256M] Memory at f9000000 (32-bit, non-prefetchable) [size=16M] Capabilities: [60] Power Management version 2 Capabilities: [44] AGP version 3.0