Comment 8 for bug 35794

I have the same problem here (same hardware, same setup).

In console-mode TV out works nicely but in X there is either noise or a black
screen. It did work around XFree86 4.2.0 or so (with the BlackFive driver).

I have tried variations of the following device settings:

Section "Device"
    Identifier "Trident"
    Driver "trident"
    Option "HWCursor" "on"
    Option "PciRetry" "true"
    Option "TVChipset" "VT1621"
    Option "TVSignal" "1"
    Option "TVSignalMode" "1"
# Option "NoPciBurst" "on"
EndSection

If I enable the TV-Out settings the startup of X takes slightly longer so the
driver seems to atleast try do something.

There may be something else I have missed in the configuration file but these
are the only options I could find documented in the man file.

The X.org version is from RH Fedora core development: 6.7.0-4