TV-OUT Grey with nVidia
 

The nVidia driver is configured with TwinView, and as the computer is booting up and at the bootloader, the TV is in full color, BUT, as soon as X is loaded, the TV is grayscale ( maybe pseudo-grayscale ) and the monitor remains full color. This only happens on one TV set ( Sony Wega. ) The card is a Geforce 4 MX 440 in PCI and the output is S-Video. The Color settings are truecolor at 24 bit. Someone please help, I'm losing sleep over this!

I figured it out, it was the FbBpp in subsection "Display" - should have been 32, but the default is 24. I suppose this is a problem with some of the newer TV sets, which also explains why my older TV was in full color. Thanks for your help.