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Deactivate ATI Overscan

1979 Views 9 Replies 5 Participants Last post by alex.ba, Jul 29, 2009

alex.ba

Discussion Starter · Jul 16, 2009

Hi,

I have a 1080P LCD TV (Samsung) which can do 1:1 Pixelmapping. Unfortunatelly my ATI 4550 always activates about 10% overscan. YOu can switch off this with a slider in the CCC.

Is there a possibility to deactivate Overscan or set to 0 per default. I know that ATI has many Regtweaks that can be done but I did not find a proper one yet.

Has anyone here an idea?

Thanks in advance

Alex

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jong1

· #2 · Jul 16, 2009

You should only need to make this change when you update your graphics drivers. Is this what you see or are you having to set the slider every time you load Windows?

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zicoz

· #3 · Jul 16, 2009

Normally the overscan settings should be saved, but I think there are some versions of CCC where this is broken and it resets all settings at restart or something.

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Bigbird999

· #4 · Jul 16, 2009

I'm confused, the default setting is to underscan ~10%. This causes it to display with a black border all around the picture. Then when you slide it to 0 it fills the screen at 1:1 mapping. Is this what you are seeing? You should only have to do this once, are you saying the setting does not stick?

BB

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alex.ba

Discussion Starter · #5 · Jul 17, 2009

Hi,

thank you very much for all the answers

Quote:
the default setting is to underscan ~10%. This causes it to display with a black border all around the picture. Then when you slide it to 0 it fills the screen at 1:1 mapping. Is this what you are seeing?

Yes, this is what I'm seeing. I have to do this 3 times (for 50HZ, 60HZ and 24Hz) and then it is saved. I then have to do again when changing the display (other type) or updating the graphic driver.

But I do not want this. I want it set to 0 as default. And I wonder if you can do this by regestry tweak

Thanks again

and Regards,

Alex

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alex.ba

Discussion Starter · #6 · Jul 18, 2009

Hi again,

I looked for all regestry keys that are related to ATI but I do not find a proper value to deactivate over/underscan.

Anyone here who can help me with that?

Than you very much and Regards

Alex

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jong1

· #7 · Jul 18, 2009

I don't believe is is possible to change the default.

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alex.ba

Discussion Starter · #8 · Jul 21, 2009

Hi again,

after days I found a regestry key that changes after moving the scaling slider in CCC this one DALR6 DFP1920x1200x0x60.

I then searched for this key and found a fixmyunderscan application. Unfortunatelly it is noc longer available under the adress.

So perhaps someone has an idea how to set this regestry key to get no underscan.

Thanks again and regards

Alex

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SneakX

· #9 · Jul 26, 2009

this "fix" doesn't work anymore (since catalyst 7.8) i got the same crappy problem in 1080p. that stupid scaling slider stays at the middle between 0 and 15% even if I put it back at 0.

I tried every drivers, even the new catalyst 9.7 but nothing works. finally I got tired of trying to fix it and put 1360x768 as a resolution (which doesn't scale (no black bars) on my LCD, a 42in Sharp Aquos)

next time I'll get a nvidia card, at least it worked when I had one.

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alex.ba

Discussion Starter · #10 · Jul 29, 2009

Hi,

thank you very much for thos.

Nvidia doesn't have the problem so it should be possible to fix it. 'I can put the slider to 0% and it stays there but I have to redo this (for 24, 50 and 60) after every driver update.

This fixmyunderscan application should solve the problem but i do not find it.

Does anyone here have this application?

Regards,

Alex

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