Help with HDMI output using ATI HD 4650

[her209]

I recently acquired a low profile Sapphire HD 4650 video card for use in my HTPC running Windows XP Pro. Upon connecting the HDMI output to my Westinghouse 42" HDTV and installing the the Catalyst 9.1 drivers, I have the following problems.

1) Picture does not fill the entire screen even though the resolution is set to 1920x1080. I went to the DTV Scaling Options and set the Underscan/Overscan to 0%. This "fixed" the fill problem.

2) Text is blurry. I've tried setting the refresh rate to 75Hz on the Display Manager Display Properties screen. However the only way to make the 75Hz a selectable option, I had to go the Display Options screen and set to List all possible modes (including panning modes).

However, after setting the refresh rate to 75Hz, I had to go back to the DTV Attributes screen and set the Image Scaling to Enable GPU Scaling and Maintain aspect ratio. If I don't do this, the fill problem comes back and the Underscan/Overscan slider is disabled.

Still no go.

3) Picture flickers every ~5 seconds. You can see the picture move half-way down the screen for a split second every ~5 seconds.

When I was using onboard VGA output, the picture was perfect with no blurriness of any kind.

 

[her209]

I guess I should add that when I do 1920x1080 HDMI output from my Dell XPS M1330 laptop running Windows Vista Ultimate, it works perfectly, i.e., no flickering, blurry text, overscan/underscan issue.

 

[jlee]

The refresh rate shouldn't have anything to do with blurry text. Do you still get a jumpy image at 60hz?

 

[notposting]

What happens when you select the Overscan option in the Displays menu on the TV itself for that port?

Also, Catalyst 9.1? Try finding 9.8 maybe. Alternatively find the latest one also.

 

[her209]

The refresh rate shouldn't have anything to do with blurry text. Do you still get a jumpy image at 60hz?

Yeah, it jumps at 60Hz and 75Hz. I read somewhere that the flickering might have something to do with the HDCP.

 

[her209]

What happens when you select the Overscan option in the Displays menu on the TV itself for that port?

Also, Catalyst 9.1? Try finding 9.8 maybe. Alternatively find the latest one also.

There's only three to choose from: Standard, Fill, and Overscan. As you go from left to right, the picture just zooms in.

I'll try a newer driver. I went with an older driver because for the newer ones, they always report back with an Application Fail error on installation, even when I take out the space in the installation path.

 

[her209]

I upgraded to the 9.8 drivers and the overscan/underscan and blurry text is still there. I'll have to see if the flickering issue is still there but didn't notice it for the short time I had it on.

BTW, I connected the DVI to my computer monitor (Dell E228WFP) @ 1680x1050x60Hz while doing the driver upgrade and there were no display issues.

 

[CurseTheSky]

If you have a spare HDMI cable (or another HDMI device to test it with) try that as well. There's a slight chance that the cable is bad.

 

[her209]

If you have a spare HDMI cable (or another HDMI device to test it with) try that as well. There's a slight chance that the cable is bad.

The HDMI cable is the same one that is used for the laptop previously mentioned and also for a PS3 which has no problems. I have other HDMI cables but its made by the same manufacturer.

 

[konakona]

I have a panasonic TV which is known to have the same underscan issue with CCC when set to 60hz. sjetski71 at avsforums suggested setting the refresh rate at 59hz and enabling "image scaling". "centered timings" or "maintain aspect ratio" should be checked off. This worked for me with my older radeon, now only if I can find those settings in cat 10.2...
Time to go back to older catalyst I guess.

 

[dedskin]

I recently acquired a low profile Sapphire HD 4650 video card for use in my HTPC running Windows XP Pro. Upon connecting the HDMI output to my Westinghouse 42" HDTV and installing the the Catalyst 9.1 drivers, I have the following problems.

1) Picture does not fill the entire screen even though the resolution is set to 1920x1080. I went to the DTV Scaling Options and set the Underscan/Overscan to 0%. This "fixed" the fill problem.

2) Text is blurry. I've tried setting the refresh rate to 75Hz on the Display Manager Display Properties screen. However the only way to make the 75Hz a selectable option, I had to go the Display Options screen and set to List all possible modes (including panning modes).

However, after setting the refresh rate to 75Hz, I had to go back to the DTV Attributes screen and set the Image Scaling to Enable GPU Scaling and Maintain aspect ratio. If I don't do this, the fill problem comes back and the Underscan/Overscan slider is disabled.

Still no go.

3) Picture flickers every ~5 seconds. You can see the picture move half-way down the screen for a split second every ~5 seconds.

When I was using onboard VGA output, the picture was perfect with no blurriness of any kind.

now what u need to do is to disable adaptive antialising ore something like it in catalyst driver manager .. text bloring will stop

Closing necro thread.
-- stahlhart