This may help, but only if you are using a 3dfx card http://www.netroedge.com/~phil/3dfx-howto.html
"Jens B. Jorgensen" wrote: > > Nope, not really. The trouble is that the video hardware isn't accessed > through a > device. It's accessed using privileged system calls which allow direct > communication > to i/o ports. The system call which enables this can only be run as root. > > There's a lot of discussion about this topic in fact. The framebuffer device > it > appears will eventually make video a regular device. > > Jim wrote: > > > I just installed Quake and Quake2 on my Linux machine. They run fine in X > > of course, and I can get the SVGALIB (console) versions to run ok too as > > long as I run them as root or suid root. > > > > However, I'm wondering if there's some kinda of special device file that I > > could just allow myself write permissions for, which would allow me to run > > the game without root permissions? I'm looking for something similar in > > concept to the "audio" group which can write to /dev/audio and /dev/dsp, > > except something for video... like a /dev/video or something. I didn't > > see anything in /dev/ that looks like it would do it though. > > > > Is it possible?