I'm not sure if some one already asked this so I'm sorry if I'm reposting.
When I start tremulous in fullscreen, everything is a lot darker than it should be, unless I start in window mode and change to fullscreen (but if I change the resolution, it gets dark again). If it's dark and I put it to window mode THEN change resolution, the light is normal again. I'm currently on the newest crunchbang linux (debian based distro).
It's not really playable when it's so dark

I'm using tremfusion but I think this problem might be in normal tremulous as well.
Thanks in advance.