I've been experiencing this bug, which makes most SDL-based games unplayable on my system, due to my monitor brightness being too low by default (adjusting the monitor controls fixes the situation somewhat, but the colors become weird).
So far, the only workaround that reliably works for me is to launch the games using the following environment variable: SDL_VIDEO_X11_NODIRECTCOLOR=1 Using it, the brightness controls work on both Eduke32 and Enigma. In Eduke32, it affects only the game window, while in Enigma, the entire screen brightness is changed, just like when using xrandr/xgamma. I haven't tested other games. I haven't found any negative side effects, so posting this here in case someone for whom the patch doesn't work needs a workaround. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org