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2010 Mac Pro 5870 Display Errors?

C

CountlovE

macrumors regular
Original poster
Aug 17, 2007
144
0
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.
 
Yeah when watching movies it is noticable in VLC on OSX too. I am thinking it is bad ATI ram on the card.
 
Normally thats sign of cable interference . . . usually because it's a sub-par cable. Have another cable to try? Is it DVI or MDP?
 
sboerup said:
Normally thats sign of cable interference . . . usually because it's a sub-par cable. Have another cable to try? Is it DVI or MDP?
Click to expand...

It's DVI. I do not have this problem with my other computer. It only happens with the Mac Pro.
 
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?
 
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 said:
have you removed the video card and re install it ?
Click to expand...

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.
 
CountlovE said:
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.
Click to expand...

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