TV out signal issues?

[Zxarr]

Greetings,

I use an nVidia 6800 card for TV out (for MythTV). I have the latest driver (9746) and viewing the desktop works alright.

I have an older CRT TV with just an RF input, so for the past few years I've used an RF converter. A few months ago (with an older driver), I installed MythTV and had it working well on my TV.

After re-installing Myth (on the same box), I used the newest drivers on the nVidia site and all of a sudden, when a TV show happens to be showing a darker screen (night scene, etc), the RF converter shuts off, as if it's not recieving a proper signal from the nVidia card's composite out connector.

Is anyone else experiencing this problem, or have any ideas? Just remove the new drivers and install the older ones?


Thanks.