I've dabbled with S-video output from my laptop and found it to quite poor. I wouldn't exactly describe it as a checker pattern, but it "shimmies" a bit. Part of this might be horsepower-related, particularly when both monitors are being driven at once; however, you should realize that S-Video resolution is roughly equivalent to 640x480 on a PC monitor. Nobody uses *that* these days, and you can imagine what it would look like on a 50" screen.
VGA output is the same quality as DVI, and quite a bit cheaper. I'm aware of KVM switches, which allow you to connect a single keyboard/mouse/monitor to two PCs. A multi-output VGA switch (if such a thing exists) would probably do the trick.
I recently have been dabling in TV Out. I have an MSI GeForce 4 MX440, NVidia video card. I have the TV Out working but I find the quality to be less than acceptable. It is almost as though a small checkers are running through the screen.
My TV is a 50" Sony LCD, the video card came with a Vivo adapter that facilitates the S-video or RCA it also has a DVI & Vga. The VGA gos to my current monitor so the DVI is available to go to the TV however I don't yet have a DVI cable & am not sure if I should buy one. Perhaps I need a better quality video card & I can stick with S-video (I already bought a 25' cable) I heard that ATI provides better TV out. I'd hate to buy a DVI cable only to find that I get basically the same piture quality, besides I don't want to move my computer that close to the TV & even a short DVI cable is expensive.
Anyone care to advise me with this?