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Crossfire/Eyefinity Problem

post #1 of 9
Thread Starter 
I've been running eyefinity for several years now with the same problems and headaches that others have voiced and have managed to deal with them. However, recently my Accell active DVI to mini DP adapter went south. Thus my headaches begin.

I bought a new adapter, and now can get eyefinity to work on either of the two cards individually, but not when both are connected. When i remove one display via unplugging it from top card when both are enabled I am able to boot into windows with 2 displays as normal.

Crossfire is enabled when I only have two screens enabled. I can also disable it via CCC as normal.

However, when I have both cards enabled, three monitors hooked up by means of DVI, DVI, and mini DP adapter, a normal Windows boot goes to blank screens after the loading Windows Screen.

I can access the BIOS, edit setting, even boot into safe mode (only 2 screens are enabled as per normal).

I've done reinstalls of CCC and tried different versions. Anyone have an idea?
    
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post #2 of 9
Thread Starter 
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post #3 of 9
Quote:
Originally Posted by Senator View Post

Bump

What have you tried and ruled out. Have u tried running eyefinity with just 1 card???? Have you ruled out bad cables. Have you checked the input settings on each of the monitor. Have you checked to make sure that CCC recognize all 3 of your monitors. Please give us what you have done.
 
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post #4 of 9
Thread Starter 
To clarify: my motherboard allows you to disable individual PCIE slots. As such, it is easily verified that eyefinity works with both cards with they are powered up individually.

As such, I assume it is safe to rule out bad cables. This also lets me rule out the inputs for monitors as I have eyefinity working correctly at the moment on just one card.

Whenever I try to utilize both cards together, I can successfully boot into a blank screen (as in no input monitors go into sleep mode). The same results happen when Crossfire is enabled or disabled. However, if I disconnect one monitor connection from the back of the cards (any of the three works for this purpose) I can successfully boot into Windows with two monitors.
    
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post #5 of 9
Thread Starter 
Bump
    
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post #6 of 9
when in crossfire mode, you only have the monitors plugged in one of the cards?
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post #7 of 9
Thread Starter 
Quote:
Originally Posted by rdr09 View Post

when in crossfire mode, you only have the monitors plugged in one of the cards?

Yes. As I stated above, I had this working correctly for years. Now out of nowhere... Bam. I assume something has to have changed but I've been unable to discover the problem.

To elaborate: I use 2 X DVI ports and 1 mini DP port to connect. Always on just one card (the top one). When testing I disabled to top one to ensure the bottom one was working and plugged all the connection into it. That test was successful and eyefinity pulled up with a problem.
    
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post #8 of 9
Thread Starter 
So I solved it. Not sure if the answer would ever be of much help to anyone but here it is.

It appears there was a conflict somewhere executing a routine that transitions from non-privileged code to privileged code. In this case an access violation due to user-mode graphics drivers crossing over and passing bad data to the kernel code.

Using the group policy editor I was able to disable any driver updates, boot into safe mode, run Display Driver Unistaller to clean up, reboot, disable the group policy edits, run Catalyst installer and PRESTO!

Eyefinity back in business with crossfire.

What a headache xD
    
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post #9 of 9
let me also add.
before finding your thread. had the similar issue and the same fix work. except this was with 680trisli and surround.



a few days ago. removed one of the 680 to temporary run another pc. sli bridge was also swap.

the problem started.
for whatever reason. 680sli was not recognize on initial window boot up. windows was using generic driver.
reinstall nividia driver (using custom clean install option).
window finally boot up with normally with nvidia driver. however sli want still not a valid option.
also had random driver crashing. the infamous - display driver stopped responding and has recovered.

boot to safe mode. uninstall the nvidia driver. reboot to normal mode. reinstall the nvidia driver. reboot. 680sli now working normally.



the lesson here is that with multi-gpu setup. whenever there a configuration change.
need to completely uninstall drivers and reinstall drivers (even if it is the same version driver).
never had to do with single gpu (i.e. 580 to 680 or vice versa).
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