This is a bug report for the issue w/ TV-out as described in this post:
TV-Out not working with 8400 GS and 195.96.24
My symptom is that my card refuses to output anything to the s-video port under X. I am using an S-video cable from my card to a NTSC television. BIOS and boot messages appear normally. There is also an issue with the output being detected, unless I use the "ConnectedMonitor" option X refuses to start since it is unable to detect the s-video connection. When I do have the option specified X starts normally and reports no errors in the log but it outputs no signal from the card. I have attached my xorg.conf, a nvidia-bug-report and an X log with a verbose level of 6.
Card: Sparkle 8400 GS 256 MB part #SFPC84GS256U2LP
OS: Ubuntu 10.04 Lucid
Driver: 195.96.24 and 256.29 beta