2010 Mac Pro 5870 Display Errors?

[CountlovE]

I have been noticing strange pixels forming patterns when I have an all black or white image. I took a picture of it, and you can see it from the photo. It looks like a red pattern across the screen and it actually moves with the application if I grab the window and move it around.

Here is a photo with a box around the problem.

http://img835.imageshack.us/img835/9843/atierror.jpg

Not sure if it's bad ram on the card or something else.

[2contagious]

does it happen in OSX as well?

[CountlovE]

Yeah when watching movies it is noticable in VLC on OSX too. I am thinking it is bad ATI ram on the card.

[sboerup]

Normally thats sign of cable interference . . . usually because it's a sub-par cable. Have another cable to try? Is it DVI or MDP?

[CountlovE]

Normally thats sign of cable interference . . . usually because it's a sub-par cable. Have another cable to try? Is it DVI or MDP?

It's DVI. I do not have this problem with my other computer. It only happens with the Mac Pro.

[CountlovE]

It's DVI. I do not have this problem with my other computer. It only happens with the Mac Pro.

Would that even happen from the cable? DVI is Digital. Not Analogue.

[pastrychef]

I think you need to swap the video card.

[CountlovE]

I had this happen to my display while in OSX:

http://vimeo.com/14808692

password: macpro

It went away after I pulled the DVI cable out and reseated the cable. So is it the cable, or the card?

[sboerup]

I have had ALL DVI monitors since probably 2003, and I have run into bad cables that caused weird pixel colors. Swapped the cables and all was well, so, it sounds like a cable problem. Look for kinks or harsh bends.

[donw35]

have you removed the video card and re install it ?

[CountlovE]

have you removed the video card and re install it ?

I haven't reseated the card. Is there documentation for that on a mac Pro? It look looked pretty forign to me when it came to pulling the card out. I tried to test another cable, but I purcashed a non Dual link DVI.

Isn't there a video card memory test I can run? It still doesn't explain why the display works perfectly for my MacBook Pro at the same resolution, but I constantly have issues with the macpro.

[Vylen]

I haven't reseated the card. Is there documentation for that on a mac Pro? It look looked pretty forign to me when it came to pulling the card out. I tried to test another cable, but I purcashed a non Dual link DVI.

Read the manual that came with your Mac Pro on the section regarding adding expansion cards.

[xgman]

Maybe it is related to this Sept 9th post re: same?

http://macperformanceguide.com/index.html

[CountlovE]

I have a feeling the issue with the Display is a grounding issue with the macpro, and the graphics card. I notice a lot of strange behavior that seems to happen when my AC unit turns on. I am going to try a power conditioner later tonight.