GeForce Go 7600 TV encoder lists no HD modes

Hi!

I have a rather old notebook with GeForce Go 7600 GPU. I am trying to get HD picture from it to my HD-ready TV, but since the latter does not have VGA input, I decided to try component (YPrPb) signal. The notebook has 7-pin S-video port that should support it.

I am using Gentoo with kernel 3.6.11 and nvidia-drivers 304.64 (although by now I have also tried older versions). I have the compulsory settings in my xorg.conf:

Option      "TVOutFormat" "COMPONENT"
 Option      "TVStandard" "HD720p"
 Option      "ConnectedMonitor" "TV"

and I have tried various other options, but what I get is my TV saying ‘720p’ and there is a 800x600 X screen in the middle of the TV display. My Xorg log has the details - http://pastebin.com/sFsJZEAF. It has a lot of irrelevant option statements, but I really tested a lot of configurations. What I really wonder about is that when I start X with ‘startx – --logverbose 6’, Xorg log has the following part in it:

[   254.061] (--) NVIDIA(0): TV encoder: NVIDIA
[   254.061] (II) NVIDIA(0): TV modes supported by this encoder:
[   254.061] (II) NVIDIA(0):   1024x768; Standards: NTSC-M, NTSC-J, PAL-M, PAL-BDGHI, PAL-N, PAL-NC
[   254.061] (II) NVIDIA(0):   800x600; Standards: NTSC-M, NTSC-J, PAL-M, PAL-BDGHI, PAL-N, PAL-NC
[   254.061] (II) NVIDIA(0):   720x576; Standards: PAL-BDGHI, PAL-N, PAL-NC
[   254.061] (II) NVIDIA(0):   720x480; Standards: NTSC-M, NTSC-J, PAL-M
[   254.061] (II) NVIDIA(0):   640x480; Standards: NTSC-M, NTSC-J, PAL-M, PAL-BDGHI, PAL-N, PAL-NC
[   254.061] (II) NVIDIA(0):   640x400; Standards: NTSC-M, NTSC-J, PAL-M, PAL-BDGHI, PAL-N, PAL-NC
[   254.061] (II) NVIDIA(0):   400x300; Standards: NTSC-M, NTSC-J, PAL-M, PAL-BDGHI, PAL-N, PAL-NC
[   254.061] (II) NVIDIA(0):   320x240; Standards: NTSC-M, NTSC-J, PAL-M, PAL-BDGHI, PAL-N, PAL-NC
[   254.061] (II) NVIDIA(0):   320x200; Standards: NTSC-M, NTSC-J, PAL-M, PAL-BDGHI, PAL-N, PAL-NC

It has no HD modes in it. So my question is, is it possible that my nVidia card has a TV encoder in it that does not support any HD modes at all? Or does this list depend on the configuration and I can still force HD modes somehow?

Googling, I found some nVidia drivers’ release notes (different version, but that’s ok) http://us.download.nvidia.com/Windows/179.48/179.48_WinVista_Release_Notes.pdf and at the very end it says that HD component modes are only supported by some Conexant and Philips TV encoders. This doesn’t look promising… Can I check somewhere which TV encoder my card has?

P.S. S-video output works fine under Linux
P.P.S. In Windows XP I can only choose S-video/composite signals, no component at all.

The X log file lists all of the modes supported by the TV encoder, so if the HD modes aren’t listed, then they’re unfortunately not supported.