Display scaling issues on 4870

[harmattan]

Just installed my two new 4870s in Crossfire. Setup was a cinch and very straightforward, even moreso than SLI.

However, I now have a issue whereby my display is not spanning the entire area of my screen. It appears to only be using about 90% of my screen area and there is about 1/4 inch black bands on all sides of my screen. Text and images look fuzzy.

My display is recognized as "Sharp HDMI" and I've tried to adjust the "Image Scaling" in the Catalyst Control Center, but all settings end up with the same scaling issues. I have a Sharp GP3U 32". My 8800 GTXs displayed perfectly on this screen. Any advice?

 

[-=PESTILENCE=-]

You may need to enable one of the TV Modes under the display properties, depending on what resolution your monitor/tv is. You can enable 1080p, 1080i, 720p, etc.

 

[mICKEL]

Underscan is a common probelm. Powerstrip may be able to help. I have used it with other video cards but not a 4870 yet. I just used nvidia's control panel with my 8800gt.

 

[harmattan]

Thanks, but I'm unable to find the TV Mode settings. Are they in Catalyst or Vista Display Settings?

 

[Andrmgic]

There is something in CCC called "Scaling options".. you should be able to set it to 0% overscan. That is what I do for my 46" sharp tv.

I forget exactly what the option is called, but it is one of the top-level icons in CCC.

 

[harmattan]

^YES^ Thanks, that did it, and I had to adjust my LCD to "Dot to Dot". LCD TV owners take note.

Careful, I was screwing around with "HDTV Support" settings and somehow made my output bad (black screen only) - had to switch to an old CRT just to change the settings back.

Now time for some gaming