VGA connection problem on a 1080p Projection TV

[idrisz]

I recently got a Panasonic 50' projection TV.

Right now I'm using it as a monitor, using DVI - HDMI cable connecting my 8800 GTS to the TV itself. Due to problem with nvidia driver, I have overscan problems, but picture is very clear and I have no problem running in 1080p resolution which is 1920x1080.

My TV actually have a VGA input as well, so I tried a DVI - VGA cable, but even though the overscan issue is fixed, the screen is somewhat blurry and I can't achieve the max resolution on the TV anymore.


anyone got idea what's causing it.

[unbongwah]

Which model of TV?

[Aleck]

Isn't pretty much all VGA blurry and impossible to read at 1920 x 1080? I thought the max resolution for VGA was somewhere just north of 1024 x 768.

[Sarkus]

Isn't pretty much all VGA blurry and impossible to read at 1920 x 1080? I thought the max resolution for VGA was somewhere just north of 1024 x 768.

Well technically VGA is simply defined as 640x480, but in this case DVI goes well up the spectrum so there shouldn't be an issue that way.

That said, sometimes TV's have limits to the inputs they accept that might be having an impact here. Without knowing the TV model it's hard to say.

Edit: I also recall there may be some issues with Nvidia drivers or the 8800GT in particular having some issues when transferring the signal to a TV.

[idrisz]

it's a panasonice 50" LIFI HDTV forgot the model, not at home

but it's blurry almost for all the resolution, not sharp and clear like the DVI-HDMI connection.

[Fugitive]

Make sure it's a properly shielded cable. Analog paths like VGA can really start to suffer from various degradation problems when you get up to high resolutions like that and over longer lengths, so cable quality becomes far more important.

[idrisz]

hmm true I brought a 3rd party one from bestbuy. horrible choice I'm looking at a few on newegg but they are all sold out.

I need dvi-vga Male to male(no gay jokes) cable.

http://www.newegg.com/Product/Produc...82E16812119044

[teledyne]

Here's nVidia's guide to setting up displays. They explain how to set up the drivers to correctly display a picture on an HDTV.

[Gunmetal]

idrisz, those cables you got are too fat. You should have gotten thinner cables - they will work harder and take less time off

[Lunch of Kong]

nothing here!

[Tankero]

Slim nancyboy cables aren't the answer!

[Sarkus]

Slim nancyboy cables aren't the answer!

Are you implying the highly trained experts at such establishments as Best Buy and Circuit City might not have the customers best interests at heart?

For shame, Sir!

[Aleck]

um, yeah, an analog signal does not transmit 1920x1080 very well. For any graphics signal over about 1600x1200, you ought to be using digital transmissions such as DVI. Analog VGA at high resolutions, as you have discovered, look blurry.

Errr... That's what I was trying to say, but Roger said it much better. Thanks!

[idrisz]

so any recommendation on cables?? I dont really mind running at at slightly lower res as long as picture is clear.

I just really hate whenever I setup my Overscan compensation and fix the overscan issue, every time some applications put me in fullscreen mode, it goes back to overscan problem again and I have to restart the pc to fix it.

[idrisz]

Here's nVidia's guide to setting up displays. They explain how to set up the drivers to correctly display a picture on an HDTV.

unfortunately, Nvidia driver have problems with 8800 GTS cards, and overscan does not work at all, unless you down an program that disable HDCP or something, and then you can use the overscan shift.

But an application make a resolution change on the monitor, it disable the overscan compensation, I have to restart pc again.