I have found this S3 Virge GX/DX Explorer PCI card that has a tv out function. I find that it works perfectly with any windows version, even if I don't have the drivers installed. However, when I install linux, it works until I start the X server. It then displays, on the tv, something that looks as though it is refreshing too fast for the tv. I have modified the refresh rate to 52hz, or even 60hz, but it just doesn't work. What do I do to get it working?