[Hampshire] Laptop display to TV.

I am trying to show my photo collection on the TV.

My Sony laptop has Nvidia GeForce Go 7400 Graphics processor. I have
installed nvidia 1.0 driver and run 'nvidia-xconfig
--tv-out-format=SVIDEO' which adds a an SVIDEO option in ifconfig (see
below) but nothing shows on the TV. I have had it working under
Windows but at poor quality.

I see ifconfig does not show screen resolution these days, should
there be anything for the TV which is a Philips standard analogue?
What am I missing?

>From ifconfig.

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TVOutFormat" "SVIDEO"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Clive Woodfine