Problem with 7600GS and 30" @ 2560

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ococ

Limp Gawd
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I've been running this 7600GS with my 20" Samsung with no problems the past year. I just bought a Dell 3007WFP-HC and am trying to run it at its full res (2560x1600). But when I try to run larger apps like Adobe Photoshop CS3 and Adobe Lightroom, I'm getting leftover artifacts when moving windows around (I don't know what the technical term is).

This happens frequently either when moving windows around, or minimizing and maximizing windows. But it only happens to select apps. I haven't seen this happen to my browsers. I tried to take a screen capture using ctrl-prntscreen, but when I paste, it's black with selected outlines in white, very weird.

I'm running the following:
GIGABYTE GV-NX76G256D-RH GeForce 7600GS 256MB 128-bit GDDR2 PCI Express x16 SLI Supported Video Card
Bios: 5.73.22.16.02
Driver date: 12/5/2007
Driver version: 6.14.11.6921
These are the NVidia package of drivers.

I also tried the Gigabyte drivers which seem older, but those have the same problem.

The other machine specs are in my sig.
Does anyone know why this is happening? Any tweaks I can try? Thanks!

Updated with screenshot
257267707_SdTce-XL.jpg
 
Do you do any gaming? Do you have problems when you game? Have you tried any stress tests to make sure you don't have a defective card?

Jeebus though @ 2560x1600 on a 7600gs.. nice monitor!
 
No I don't really play games anymore. I just use the big a$$ screen for photo editing and surfing :)

What kind of stress test should I run, like 3d Mark?
 
I've tried both the Nvidia driver (listed) and the latest on the Gigabyte site (i think their latest is from 2006)...are u suggesting I grab some older Nvidia drivers?
 
ococ said:
No I don't really play games anymore. I just use the big a$$ screen for photo editing and surfing :)

What kind of stress test should I run, like 3d Mark?
Click to expand...

atitool.. and maybe DX9 Real-Time High-Dynamic Range Image-Based Lighting simulateneously.
 
Might just be the card. I upgrade frequently and had a 6600gt around for some time to use between upgrades. When I got my 3007WFP, the 6600 was no longer good for this. I would get lag when dragging windows, blacked out boxes, artifacts, ect. I tried reinstalling and using it in different builds and always got the same result when it was hooked up to the monitor.

I then bought a 7300GT to replace it but that didnt work either. At the neative res., it shows just a small corner of the screen with gigantic icons and I had to use the mouse to scroll verticaly and horizontaly.

You might just be unlucky and have a card that doesnt like the res. Just because its dual link and supports 2560x1600 doesnt mean its going to be efficent at it. I ended up just building a small file server with integrated dual link DVI and use that between upgrades. Works like a champ. If youve tried everything it might be time to look for a new card.
 
Have you tried temporarily forcing a lower res to see if the problem persists?
 
does that card even support 2650 resolutions????
I'm not even sure the 7600 has enough to push that resolution????
You'd have to look it up......a GS that I use tops out at 2048, but I only use mine on a 17 inch monitor for basic display.
My guess.....the card simply cant do it.
 
I'm assuming from the model of that monitor its a 30" and I've had experiences with 30" monitors not working on anything less than 7900 series card properly.
 
I'm assuming from the model of that monitor its a 30" and I've had experiences with 30" monitors not working on anything less than 7900 series card properly.
Click to expand...

Older cards do work but I dont think they had a standard, or something along those lines, as its hit or miss. Ive ran a 7800GTX, 7600GT SLI and a 7300GS fine without issues. Im typing on my intergrated 6150 right now.

Do try going to a lower res. This did solve my problems when I was having them but I didnt like it due to the fact that I paid alot to use that res. If it works fine at a slightly lower res then your card definatly cant handle it.
 
Go here:http://www.evga.com/products/moreInfo.asp?pn=256-P2-N541-T2

Click on the spec sheet .pdf,
The eVGA branded 7600 GS DOES NOT support 2560 resolution. I think its as simple as that. The highest resolution is what I posted in my previous spot above.

In other words, it isnt a driver issue. Unless the gigabyte branded card has some magic dust eVGA doesnt.
 
magoo said:
Go here:http://www.evga.com/products/moreInfo.asp?pn=256-P2-N541-T2

Click on the spec sheet .pdf,
The eVGA branded 7600 GS DOES NOT support 2560 resolution. I think its as simple as that. The highest resolution is what I posted in my previous spot above.

In other words, it isnt a driver issue. Unless the gigabyte branded card has some magic dust eVGA doesnt.
Click to expand...


Thanks for the link. That's interesting. But that conflicts with what NewEgg has listed as well as Gigabyte's site:

From NewEgg: http://www.newegg.com/product/product.aspx?Item=N82E16814125028
General
Tuner None
RAMDAC 400 MHz
Max Resolution 2560 x 1600
RoHS Compliant Yes
SLI Supported Yes
Cooler Fanless(Silent-Pipe)
Dual-Link DVI Supported Yes

Then from the Gigabyte site: http://www.gigabyte.com.tw/Products...GA&ProductID=2237&ProductName=GV-NX76G256D-RH

Display Support
*Dual integrated 400MHz RAMDACs for analog display resolutions up to and including 2048x1536 at 75Hz.
*Dual-link DVI capability to drive the industry's largest and highest resolution digital flat panel displays up to 2560x1600 at 60 Hz.
*Integrated HDTV encoder provides analog TV-output (Component/Composite/S-Video) up to 1080i resolution....

However, that site also has the following chart:
Widescreen resolution support
Resolution Colors (bits) Refresh Rate (Hz)
16:10
1920 x 1200 8/16/32 75
16:9
1920 x 1080 8/16/32 85

ARGH....it sucks that they claim support for 2560 but can't do it even for non-gaming.
 
LaChupacabra said:
Try Driver Cleaner (http://downloads.guru3d.com/download.php?det=745). It's pretty good at getting old drivers out so you can do a clean install of new ones. Might clear up your problem.
Click to expand...

So the interesting thing is there's some correlation of the issue between my Symantec AV and the problem. When I turn off AV, I can maximize and minimize without any issues. But when AV is on, then the problem occasionally appear.
 
Confusing.
I never trust Newegg for that technical stuff, because their site is often wrong in those regards.
I usually research on the supplier's website if I can.

You may need to get a more stout card, but if you dont game at all.....check this out, spec sheet lists 2560 resolutions....http://www.newegg.com/Product/Product.aspx?Item=N82E16814130085 (on evga's website AND neweggs)
 
I can't go by just specs anymore...I'll do more research to see what kind of cards ppl are using to drive 30's.
 
Updated the first post with a screen shot of the problem. I thought the problem was because I was trying to open multiple 120mb PSD files, but then I rebooted and opened a single 10mb image full screen. Tried to drag it around and the window disappears while dragging. Then after more clicking, the ghosting appears like the screenshot above.
 
Well, my 8800 Ultra drives my 30" LCD no problem but obviously that would be overkill for your situation (non-gamer that is). Just find the cheapest dual link DVI card that supports 2560 X 1600.
 
Johnny78 said:
Well, my 8800 Ultra drives my 30" LCD no problem but obviously that would be overkill for your situation (non-gamer that is). Just find the cheapest dual link DVI card that supports 2560 X 1600.
Click to expand...

I thought I did that...which is why I bought the 7600gs.

So let me ask a dumb question. Do all Dual Link DVI cards support 2560x1600? And a followup dumb question. If the 7600GS doesn't support DLDVI...would anything be showing up on my screen?
 
ococ said:
I thought I did that...which is why I bought the 7600gs.

So let me ask a dumb question. Do all Dual Link DVI cards support 2560x1600? And a followup dumb question. If the 7600GS doesn't support DLDVI...would anything be showing up on my screen?
Click to expand...



Well, here's what I do know, 2560X1600 resolution can only be carried over a dual link DVI cable/port. Single link DVI maxes out at 1920X1200. (And I'm assuming you can tell the difference between the two, single link has only 18 pins while dual link has 24 pins). Interestingly enough, when I first got my 30" inch LCD I made the mistake of trying to use a single link DVI cable to hook it up. I instantly saw complete mayhem on my screen and I thought my brand new LP3065 was defective. That's when I quickly realized I used the wrong cable and once I used a dual link cable everything was fine.

Now, back to your original question, I'm not sure that just because a video card has a Dual link DVI it garauntees that it has the horsepower to adequately display a monitor at 2560X1600. I suspect your card simply is not powerful enough to do so adequately.

Since your card does have a Dual link DVI port, then yes, you will probably get a picture, but since your card is much more processing power limited (compared to 8800 series card for instance) that may be the cause of the screen corruptions you're getting. Anyway, just my educated guess.
 
Johnny78 said:
Now, back to your original question, I'm not sure that just because a video card has a Dual link DVI it garauntees that it has the horsepower to adequately display a monitor at 2560X1600. I suspect your card simply is not powerful enough to do so adequately.
Click to expand...

I opened a case with Gigabyte since their card advertises 2560x1600, we'll see where that leads...
 
When you move a window or minimize/maximize, you have a spot where that window was or (when you minimize something) the contents of the window remain?

If that is what you're seeing it's a clipping problem. "Clipping" is the Microsoft term for (basically) confining the contents of a window to the right spot on your display.

I was having this problem and there was some fix for it - something about texture memory or something like that. I am running @ 1920 x 1200 and had to go poke a higher number in some reg value. Could be the problem is more pronounced @ 2560 x 1600...

I will see if I can find what I had to change to fix it, but once I changed that value, the problem ceased completely. It is a Windows/video driver issue - it is NOT a hardware issue.

Edit: Ok, after I actually typed this and then used my own words in Google ('vista registry clipping memory' in case anyone cares) the 5th link that comes up is it.

http://blogs.zdnet.com/Bott/?p=269

I just double checked my own reg value - I changed the value from 3072 to 6144 and I don't have the issue. You may need to go a bit higher depending on how many apps and the fact you're at 2560 vs me at 1920. Almost certain this is your issue.

FWIW, MS used to pay me lots of money to fix stuff like this. And yes, they really should publish a damn KB article on this or something.
 
thanks for the suggestion. It seemed like the best one so far but sadly it didn't fix the problem. :( I bumped it up over 8000.

time to get back to basics and do some systematic troubleshooting.
 
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