Eyefinity question / issue?

[warpedmedia]

Hey fellows,

I recently found and purchased a 3rd 24" monitor to add to my setup and took the plunge into eyefinity with a single 6970 (MSI). I have two dell 2405FPW's and an NEC PA241w setup in portrait mode with the two Dells flanking the NEC, the two Dells are hooked up with DVI, the NEC is straight up DP.


Everything works fantastically but I have noticed a vertical "tear line" on the NEC that moves slowly from left to right, slowly as in it takes perhaps 5-8 seconds to complete a lap. It doesn't seem to be an actual tear line in the context of what I would percieve with a normal LCD setup without vsync turned on (I do have vsync on FYI) as this line is more perceptable when moving the view around slowly.


My question is, is this some artifact because of my setup? Is there a way to get rid of it if perhaps I used a DP to DVI convertor? Would it go away when I eventually move to a pair of 6970's in crossfire? Has anyone else seen this? What's with the fuzzy donut post I just saw?


Anyway, it's only particularly annoying to my OCD side, and I'd like to get rid of it if possible or at least shed some light on it's dark secrets.


TL : DR = Boggle!?

Thanks!

 

[Dan_D]

As I understand it the tearing issues are quite common with Eyefinity. I don't know if you can do anything about it. I've never experienced that when I had it, as I recall. Now I run NV Surround and don't have that problem either.

 

[master noran]

Have the same issue, using a phillips 24" 1920x1200 and 2 dell 2407's 1920x1200. 2 via DVI and one via active single link DP to mini dp converter. Might be due to the single link active display port adapter, might have to get one of this ones with an additional usb connection for extra power.

 

[Dan_D]

Have the same issue, using a phillips 24" 1920x1200 and 2 dell 2407's 1920x1200. 2 via DVI and one via active single link DP to mini dp converter. Might be due to the single link active display port adapter, might have to get one of this ones with an additional usb connection for extra power.

I believe that's the issue. The active display port adapters are the reason for the tearing. If you aren't running all DP monitors you have little choice but to use such an adapter beyond 1920x1200.

 

[warpedmedia]

Well, I'm also using the mini DP to DP adapter that came with the card and it is on the center monitor. The outer two are DVI direct to the card. However the mini DP to DP adapter shouldn't be active as there is no signal conversion, I will try swapping the monitors around to get a DVI connection in the center and post my results.

 

[Ocellaris]

Well, I'm also using the mini DP to DP adapter that came with the card and it is on the center monitor. The outer two are DVI direct to the card. However the mini DP to DP adapter shouldn't be active as there is no signal conversion, I will try swapping the monitors around to get a DVI connection in the center and post my results.

Did you have any luck fixing this? I found a 3rd matching monitor for my setup, bought a Sapphire DP->DVI adapter, got Eyefinity setup and got ready to enjoy the 4800x1200 goodness. First thing I noticed is that the DP monitor has a tear line that slowly moves up the screen, takes about 8 seconds to completely a lap like the OP noted If I set the DP monitor to the Preferred Display, then I get a tear line moving down on both of the monitors connected to DVI. I find the whole thing extremely annoying, especially on videos and games being displayed on whatever monitor has the tear.

My friend has a 58x0 and it does not do this with the exact same monitors and the same Sapphire adapter.