DVI to HDMI lowers quality?

Doomy

Doomy

Doomy

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I have an 1900XTX that I have hooked up via DVI-HDMI cable to get 1080p films on my Sharp XD1E 42". My PS3 runs at 1920x1080 60hz no problem. I cannot get this resolution and refresh rate to fill my screen, leaves a centimeter border around the edge of the screen. It fills the screen if I select 50hz but it looks no where near as nice as my PS3 obviously. Has anyone found a way of doing this? I have the latest 7.6 drivers.

I should add theres a FPD2185W Gateway monitor hooked up to the other DVI out on card too.
 
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I had a similiar problem with my LE40M86, I found that you need to tell your TV that the signal is from a PC (settings?) to get 1:1 pixel mapping.

KaHn
 
The amount of searching I have done suggests this too. Guess I need to work out how to do this on my sets settings. I did look but nothing seemed to suggest 1:1, reading the manual is probably my best bet but my XD1E only supports 1080p via hdmi and the PS3 sets up without any settings adjustment.

I am sure my tv supports 1:1 tho. Thanks for help anyway
 
Ive got this problem on my LE40M86, got a ATI1950xt, about a cm around the edges.

Ive tried everything, TV settings, GPU refresh settings, power strip. nothing works - A Nvidia card has gone in and works! :)

If anyone can give me a step by step guide that would be good.
Firmware for TV is 1000 (oldest i think)
 
For the samsung m series go into the menu options when you are on your hdmi channel and set it to "just scan", or something along those lines sorry can not do it exact as mine is in for repair atm so can not check up.


A quick edit that is working fine here with a nvidia 7900gs so I don't know if the card makes a difference.
 
I had that same Sharp. With a ATI you might need to disable "DVI high frequency output" otherwise you'll get no signal at 1920x1080 @ 60hz. It depends, I had ATI X300 and ATI X1900XT, for X300 had to disable it, X1900XT didn't.

Also try 75hz, for some reason this works.
And use the ratio button on the sharp's remote flap, one of them will give it 1:1.

Bring up a net page, disable cleartype and you should spot when it's 1:1.
 
squiffy said:
I had that same Sharp. With a ATI you might need to disable "DVI high frequency output" otherwise you'll get no signal at 1920x1080 @ 60hz. It depends, I had ATI X300 and ATI X1900XT, for X300 had to disable it, X1900XT didn't.

Also try 75hz, for some reason this works.
And use the ratio button on the sharp's remote flap, one of them will give it 1:1.

Bring up a net page, disable cleartype and you should spot when it's 1:1.
Click to expand...

This is what I have tried so far :) I get a signal at 1920x1080@60hz. It quite clearly isnt and it shrinks the picture and with the ratio button I have 2 settings, underscan (the one i believe I need) and full widescreen. Underscan gives me 10mm at the top missing and full gives me 30mm or so.

Ill try the other options suggested though, cheers again. Hellbent on getting this to work.
 
Try the 75hz setting then, I think at 60hz it was under scanning or over scanning (forget which) with one of the ATI cards, even when using the ratio aspect button.
 
How utterly frustrating. Sat here on my lounge floor watching a stunning 1080p version of Black Hawk Down via my pc. Why I hear you ask? Because its coming from my emergency PCI nVidia 6200 Go. Scaled immediately to the right resolution and straight to 60hz. And I am blown away by it. Theres an intermitent judder, 1 frame or so every 10 secs but I can forgive my card for that seeing as its poo. Yet better than the beast above it in the PCI-E slot.

I am banging my head against the wall here, I have tried all the helpful suggestions in this post and a few others elsewhere and it just plain downright refuses to show 60hz nicely, nor 75. I am so tempted to just trade my ATI in for an nvidia equivalent unless someone really nice can take 30 mins to walk me through it.

Does anyone else have any ideas as to what I could try next? :D
 
Yeah people have had problems with ATI cards with the Sharp. Using ATI X300 into a Samsung M86, again had to disable high frequency output. I've seen people on the avforums, and even when doing that, plus trying 50/60/75hz, it still doesn't work.

My X1900XT worked fine into the Sharp XD1, so did the ATI X300.

If possible use the Sharp as secondary, so you can play around with CCC until it works, and not losing ability to change settings.
 
Doomy said:
I have an 1900XTX that I have hooked up via DVI-HDMI cable to get 1080p films on my Sharp XD1E 42". My PS3 runs at 1920x1080 60hz no problem. I cannot get this resolution and refresh rate to fill my screen, leaves a centimeter border around the edge of the screen. It fills the screen if I select 50hz but it looks no where near as nice as my PS3 obviously. Has anyone found a way of doing this? I have the latest 7.6 drivers.

I should add theres a FPD2185W Gateway monitor hooked up to the other DVI out on card too.
Click to expand...

Are you sure your card isn't set to 1920 x 1200 which is a the standard 16:10 ratio PC displays use?

If its outputting that res then the scaler in your display is probably kicking in and shrinking the image down very slightly hence it not filling the screen

Well its just a thought anyway.
 
Im pretty sure it isnt. Can the card not output a 16:9 AND a 16:10, is that what you are saying? My monitor is 16:10 (hence the 1650x1080 res) but my tv is 16:9.
 
Well thanks a lot peeps, I didnt chance upon that thread till today (cheers kipper67), it looks like an ATI driver issue that is being worked on since february, hopefully the 7.7's will remedy my problems.

I was lead to believe that ATI had the best TV support for ages but this seems to have flipped to nVidia for now, was tempting to trade for a 7900 to fix this immediately but I think I'll hang on for a bit. Just frustrating after watching a few Blurays from my PS3 and seeing how god damned nice they look. Im aware I can stream from my PS3 but file conversion is something id like to not have to do.

My PC is so close to my TV now that it seems pointless to have a dedicated HTPC running things but if the issues arent sorted out by the next update I'd be tempted to go nVidia route just to avoid the hassles, both make good cards but I need something pretty much urgently being highly impatient. ;)
 
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