8800GT or LCD problem?

Ankle

Gawd
Joined
Oct 10, 2005
Messages
1,022
In short:
Is the 8800GT 512 (g92) or the display crapping out here?

Long:
Recently to my dismay I encountered some strange artifacting (if you can call it that, looks similar to ghosting from interference) in EVE a few weeks ago. It went away after I quit the game and didn't happen for a week so I wrote it off as a 'meh eve, shitty ccp programming' thing. However I ran into the same artifacts now in Baldur's Gate and Sins of a Solar Empire and they also persisted on the desktop multiple times. A few times when this happend the resolution on my LCD (Gateway FPD2185w connected via DVI) went whack and only showed a tiny portion of the screen interpolated to stretch. I tried to print screen and save some screenshots but when I looked at them on my mac the artifacts weren't captured in them.

After a 7800 and 7900 GT dying on me one after the other I was a very suspicious of my 8800GT 512 (g92) having kicked the bucket until I was unable to capture the artifacts and then I discovered cycling inputs (switching between pip or dvi and vga) causes the artifacts to go away and the resolution to correct itself and now I'm suspicious the monitor is failing instead. The artifacts are transparent and inverted duplicates of objects on screen shifted to the left and text is super blurry and then unusually sharp in other areas - it looks a lot like ghosting one would get over VGA with very bad interference.

Here are some pictures I took of the artifacts on screen, some of it is pretty hard to notice between the black and the transparency so you may need to look close particularly on LCDs suffering nasty black crush. The blurry and sharp fonts are hard to make out in most of the screens as the camera isn't the best at capturing it nor are my handles very stable.

IMG_0399.JPG

Transparent start menu with duplicate black mouse and synergy's white log duplicated to the left as black.

IMG_0401.JPG

More inverted duplication to the left, this time part of explorer's top-right corner.

IMG_0402.JPG

EVE Online with inverted menu and cursor to the left in assets and very wonky text.

IMG_0404.JPG

Photoshop 7 tool windows inverted to the left.

Higher resolution of entire desktop area with the artifacts from the first two images.

I have the PC connected via DVI and my Macbook Pro connected via VGA to the same display. The problems so far have only occurred with the PC on the display and not my Macbook Pro.
 
That seems more like LCD, are you running analog or DVI?

Download ATI Tool, use the Artifact tester to eliminate your GPU, preferably borrow another LCD off a mate or something and see if it does the same thing.
 
That seems more like LCD, are you running analog or DVI?

Download ATI Tool, use the Artifact tester to eliminate your GPU, preferably borrow another LCD off a mate or something and see if it does the same thing.

DVI for the PC which it happens to. No problems over VGA with my Mac.

So far 1.2 hours of ATi Tool and rthdribl and no problems. I don't know anyone with a spare LCD to borrow unfortunately. Worst part is the frequency of the problem for figuring this out; it seems fairly random and doesn't always happen so even if I had a display to swap it could take over a week or more for it to happen.
 
Is there any possibility that you can check the DVI connection on the Mac? And if not, have you tried the VGA w/ the Windows system? I think that would help diagnose the problem pretty easily.

If that does not help, I wish you the best of luck.
 
I bet its the LCD. Back in the day when I had a voodoo3 on a crapy 15inch NEC screen I had the same problems. Try playing games over and over again, and watching some dvd's try figuring out some kind of pattern. What you could do is hook up the screen to your imac like stated above. Or stepup or RMA the card to rule it out. Goodluck.
 
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