Weird crossfire issue

[Guest Mad Cow]

I have 2 X1950 PROs, a rev1 HIS and a rev2 sapphire. My board is a CFX3200. I used to have an asus a8r-mvp and it had the same issue. I used to get really massive display corruption with crossfire enabled on both boards, it wasn't as bad with vsync enabled. The weird part was that it doesn't show up in screenshots, or when you alt-tab out of the game the image will freeze for a second and it'll look fine. It looked like really bad image tearing, no 3d artifacts. Now, I modified both video BIOSes to have the exact same core and memory clocks, and disabled the option that lets the PCIE slots communicate with each other. (At least I think that's what it is, it's in the PCIE BIOS menu) Now with vsync everything is perfect, crossfire works and there's no corruption. But when I disable vsync, run a game and enable it again the corruption is back. It's pretty annoying having to restart the computer when I accidentally disable it. Vsync also sucks when your framerates are low, like in crysis.

 

Is anybody else having this issue? Any suggestions on how to fix it?

[slick2500]

Sounds to me like the crossfire isn't syncing correctly.

[Guest Mad Cow]

That's what I thought too, that's why I clocked both cards the same. I just read a little article about crossfire and realized that it might be an IRQ issue too. My X-FI has the same IRQ and one of the PROs. Gonna try removing it later.

 

EDIT: Great, now I can't do that because I just sliced my thumb open with an x-acto knife. :mad: Gonna have to wait for it to heal at least a bit. Any other suggestions for my crossfire issue?