Debian with dual screen on a nvidia card here. The loader screen only offers 3200x1920 as a possible choice for screen resolution, which obviously makes the game totally unplayable. How come there's not an option to choose a fixed window size ? You know something like 1024x768.
This is actually an SDL issue. You need the correct modes defined in your X configuration. please see this thread http://community.gaslampgames.com/threads/1-0-6-linux-resolution-problems.1181/
