Re: Nvidia 8500 secondary screen tearing
You still haven't posted a bug report, so you are severely limiting the amount of information anyone can gather about your system.
Is there a reason why you are not using twinview, and instead are using separate X screens? With twinview you are given the option of *only* syncing to one monitor at a time. Also when I said the refresh rate needs to be the same on both screens, I mean exactly the same. This is usually best with two identical monitors.
Try twinview and sync to only your TV, and report back.