I'm running The Dark Mod on a "32:9" super wide monitor and that works fine. The menus are stretched, but usable. In-game graphics look normal. It would be nice if these settings would be included in the supported resolutions, so I don't have to manually edit a cfg file. ?
I'm using these settings in Darkmod.cfg:
seta r_customHeight "1440"
seta r_customWidth "5120"
seta r_fovRatio "3.56"