No external preview with new video card
 

Not sure if I'm going to have to revert or not...

I just replaced a PNY GT6600 with a Radeon HD 2600 Pro. Now, the preview from PPro 1.5.1 no longer gets displayed on the my 2nd monitor. WMP, etc., do use the 2nd monitor for full-screen video. When I'm *playing* a timeline in a PPro Cineform project, then the video is displayed on the 2nd monitor, but not when I'm scrubbing. In a DV project, no output at all from PPro is displayed on the external monitor. In the Cineform project, the external monitor is blacked out.

Also, it looks like the gamma or something is messed up in the PPro preview window. When I'm scrubbing, the preview window is lighter than when not scrubbing. That was happening under the old card, too...

Any thoughts on the Radeon would be appreciated.

Thanks,
Matt