Cannot run Crysis in my monitor's native resolution: "out of range" error

Hi,

Something that bothers me with Crysis and Crysis Warhead is that I can't play it in 1920x1080, my monitor's native resolution. The maximum resolution that works is 1770x1000. If I select 1920x1080 in the options, my monitor displays a "out of range signal" error and the game runs in 1770x1000 with black borders all around the screen.

It seems to be a fairly common problem with Crysis (all other games are fine). I've tried a quick Google search, but the usual answer to this specific problem seems to be "lololol your computer is crap and can't handle Crysis... problem?". This is not the problem: my computer's fine. All other games are fine. It's just the Crysis games that don't work at max resolution.

My computer:

• AMD Phenom II X6 1090T;
• 8GB RAM;
• 2 AMD Radeon HD 6870 in CrossfireX;
• Windows 7 Professional 64-bit;
• Crysis was purchased from Steam, so I assume it's the 32-bit version.

EDIT:

Just tested, and it also affects the 64-bit version. Also, I forgot to mention that, regardless of the resolution, there's a lot of underscan when I play Crysis.

EDIT #2:

Just found on a forum a stupid workaround that fixes both the underscan and the "out of range" error.

For some unfathomable reason, while in-game, pressing Alt+Enter several times on the keyboard forces Crysis to use the resolution, underscan and refresh rate settings of the desktop.

Alt+Enter is a Windows shortcut that "displays properties for the selected item"... Don't know why it works, but it does, so I ain't complaining...