Ok, I tried this in the HTPC forum but they aren't getting what I'm talking about. I have a GeForce 6800GT going either DVI or VGA out to my 8501LC. Problem happens with either connection. Anything above about 720 and my image becomes cropped on all 4 sides, much like you would expect with overscan. But it's not overscan. Terry and I played around for a while trying to remove the cropping but with no luck. Blanking isn't on. It's driving me a little nuts. I didn't think with NVidia that I had to use Powerstrip anymore. Was I wrong?

You get cropping with desktop too?

Yes. We tried shifting the image around, making sure blanking was off, etc; It's just gone off all 4 sides.

So the picture is actually over-scanned within the raster?

Apparently, yes. And the higher the resolution, the more real-estate lost. Terry and I were both perplexed.

HAve you cheched to see no zooming/stretch mode is activated?

I couldn't find anything in the GeForce controls that indicated any of that was turned on. I may uninstall all my video drivers and try again.

Good move. It sounds like a driver issue.
Make sure to do a registery clean up.

Test it on a CRT monitor as well.

It's fine on a CRT monitor :(

It's fine on a CRT monitor :(
That is odd. Are you using moom's card or direct BNC?

I have the exact same issue on my both of my PCs ( stock video cards) My older Compaq and my brand new Emachine. They both work fine with my monitor also. I gave up on it and went back to the DVD player.

This one was odd as I have quite a bit of expeience with NVidia 6600's and 6800's. 720P frames perfectly but at higher resolutions there is overscan. We didn't have a lot of time to look at it.
Set one up today without issues.

Terry

Have you tried turning on fast retrace? Also, you can increase the front/back porch timings to "squeeze" the desktop into a larger frame. Use PowerStrip for this. There are probably also top and bottom adjustments, but I forget what they are called.

I'm wiping the drivers and starting over. We had some weird issues all around, so it will be a good place to start. Is Fast Retrace an option within the NVidia control panel? It was exactly the same both on Moome's DVI card and on RGB to BNC.

Hey... when the heck did I hit 10,000 posts? :) Yeah me!

I'm guessing Fast Retrace is an option in Marquee projectors. Normally the pj looks after this itself.

It's not a video card setting.

Yes, fast retrace is a Marquee setting. Actually, it's the "retrace" setting, and it can be set to either "fast" or "slow". It controls how long the projector stays in retrace mode. It sounds to me like you're computer is sending video info before the retrace period is ending (slow mode).

Thanks, I'll hunt that one down then.

-MP

What desktop are you using, I found that I needed to use a certain desktop to get a full width image. Real easy check, found that about half the desktops I tried would not give me a full width image.

Deron.

Tried 1440x960 and 1920x1080, both lost data.

It isn't one of those things where windows thinks that your monitor has a maximum resolution so crops the image to fit [and goes all scrolly] is it?

It may see your desktop monitor as capable of high resolutions but not recognise your projector as capable?

I had the same thing with a 6600 via DVI at 1920x1080.

Cropping PLUS Virtual desktop. Radeon worked, as you can override the EDID.

But both had issues with an interlaced res into the Moome card. There were "bits missing" - kinda hard to explain.

I had the same thing with a 6600 via DVI at 1920x1080.
Cropping PLUS Virtual desktop. Radeon worked, as you can override the EDID.
But both had issues with an interlaced res into the Moome card. There were "bits missing" - kinda hard to explain.
so the Nvidia image cropping is not the same as virtual desktop where you can actually scroll over to the missing part? what did you do to elimintae the cropping, switch back to Radeon?
mad, just to be sure there is a setting for max monitor rez. somewhere in the advanced video settings tab. Make sure the "max " ins't less then the resolution your trying to run or you will get virtual desktop mode. If the Nvidia image cropping is different from this then ?

Well I was just testing with a spare PC.

And yep it had the panning around virtual desktop AND then some was still missing at the edges. Tried a custom monitor driver, and the Nvidia custom res settings and powerstrip. No go.

Radeon 9500 worked staight away, but I had already "rewritten" the DDC/EDID to 2048*1536 using ATI tray tools and installed a custom monitor driver.

I'm pretty good at beating EDID, but not on the Nvidia card...

Even with 720p (which worked perfectly) the XG DVI card was no sharper than RGBHV, even through a NEC switcher.

so the Nvidia image cropping is not the same as virtual desktop where you can actually scroll over to the missing part? what did you do to elimintae the cropping, switch back to Radeon?I had some problems with virtual desktop with some driver version, it was turned on by default. I think it was in properties/settings... (no actual Nvidia driver), where I got it turned off.

Is it looking for a "plug and play" monitor and it can't find it? I think when it's hooked up to a monitor, your pre set rez will work. When you plug into a PJ like ours it defaults to something else that it thinks will work.

Chip

I think i have the same issues with my 42" Pioneer plasma. The higher the resolution the more picture I lose. Also when hooked via component I get the blanking retrace period show up. The picture is fine until data shows up on the screen then it jerks and blanks out for a second or two. If 1080i is being broadcast and I have the cable box set to 1080i it does this. If it's a 720p broadcast and the box is set to 720p it does this. If I change the resolution other than what is being broadcast it is fine. This is just using component. Is there some way to fix this?