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6950 in crossfire - atikmpag.sys error

PitchWhite

PitchWhite

PitchWhite

Associate
Joined
9 Mar 2004
Posts
360
Getting atikmpag.sys bsod any time I am trying to run these in crossfire. Both cards work perfectly fine independently - but as soon as I put them into crossfire it will bluescreen within a second.

I have tried - changing drivers - uninstall - safe mode driver clean and fresh install.

Different driver versions.

Disabling as much as I can on the motherboard in the bios to prevent conflicts.

Updating onboard soundcard drivers to as recent as possible.

Underclocking cards.

Switching the 2 cards around. As I say both work fine on their own as the primary card. In fact both have worked ok in crossfire briefly when I switched them over and then 1 reboot later (no changes made) the problem has manifested again.

Anyone any idea of how to fix this?

Will have to try a whole reinstall of windows but if that doesn't work - then I'm out of ideas and I guess I'll just have to sell one of the cards. (though I bought them within the last 2 weeks I can't really send it back if nothing wrong with it)
 
PitchWhite said:
I have tried - changing drivers - uninstall - safe mode driver clean and fresh install.



Will have to try a whole reinstall of windows but if that doesn't work - then I'm out of ideas and I guess I'll just have to sell one of the cards. (though I bought them within the last 2 weeks I can't really send it back if nothing wrong with it)
Click to expand...

eerrr driver clean, not recommended by most, I never used it and never suffered any problems with ATI driver installing or unistalling (well apart from when i installed loads of profiles and when unistalling would get a bsod on each unistall, which was my fault in the first place)

I would definatly be looking to a reinstall, would be a lot quicker that trying to find what is wrong imo
 
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Didn't use it until I wasn't getting any where with standard reinstall =/
Will see if anyone has any other ideas or I'll reinstall windows tomorrow night and see if that helps.
 
1000W Coolermaster Silent Pro Gold
i7 2600K (tried setting back to default clock speed/cmos defaults in case it made a difference)
8Gb 1600mhz G Skill ram
Tried allowing ram to autoconfig - tried also setting manually to defaults

This is a freshish build (1week) - though crossfire was working before I didn't test it heavily it just seemed fine. Now I can't seem to find why it won't work.

All works fine UNLESS I tick that crossfire box =( (if box is ticked but I run a 3d app in a window it works fine also..but that is of course because crossfire doesn't kick in unless it is fullscreen)
 
try disabling Ulps

Go to registry and disable Ulps:

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Cl ass\{4D36E968-E325-11CE-BFC1-08002BE10318}]

and change "EnableUlps" to 0 under the 0000 and 0001 and 0003 keys.
Click to expand...
i had to disable Ulps and it has fixed my crashing issue (atikmpag.sys)
 
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I have been having the same BSOD issue, but with only one 5850, I get it with 10.4 drivers and 11.2.

I have reinstalled windows once already, but from the recovery console, and it hasn't fixed it, do I need to format my HDD and reinstall again from a clean disk? if I uninstall the drivers it is fine but as soon as I reinstall them the error comes back. upon windows loading, it crashes, I think it is as soon as the driver is loaded, but before it was taking longer (hours-days) to crash
 
ok, I've just reinstalled windows from a format, reinstalled my usual basic programs (AV, Browser) and the new 11.3 drivers, and after a while I got the same BSOD message, then it struck me, there was now only one common factor in terms of software- Google Chrome!
Uninstalled that and replaced with firefox and now all seems pretty good, early days but I will report back tomorrow. Hopefully this is the end of this problem!
 
it's back :( seems google chrome was not the culprit, although it was definitely setting the bsod off. I'm now leaning towards it being a hardware problem, as I can't think how it could still be software after all I've tried.
 
in my case, I only have one card, so is not a CF issue, but have just moved my card to the second x8 slot on my mobo, and it now seems fine, after a few games of BC2, so I think it's my board that's at fault. No matter as its a B2 P67 so its gotta go back either way! :D

so to the original poster, I would suggest, as you say both cards are good seperately, that you try one on its own in the secondary slot (nothing in first), if that doens't cause the BSOD, then I think we will have a solid answer. (btw, after moving my card windows didn't pick up the driver first time, but after a reboot it worked fine, DON'T PANIC!!)
 
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I'll try and restart this thread before starting a new one. I'm experiencing similar issues when I purchased another 5850 off Ebay. Both cards work fine. As soon as i boot into windows I get a BSOD. Sometimes with this error code. Both mostly with some random one. I am pretty sure its a driver issue. I'm currently running the 11.10 Preview drivers, but I have tried older ones (I have clean sweeped the previous versions every time i re-install).

The strange thing is that if I boot into windows either through system restore to a point before I installed second card, or if i disable crossfire and then restart, i get no BSOD on startup and I can run crossfire and stress test the **** it of them and they work fine. But if I restart with corssfire enabled then it BSOD. Not a massive issue to disable it before shutdown, but I do like to try and get to the bottom of these issues. Something between shutdown and startup ***** crossfire off :D

Any new thoughts since last post?
 
i had this problem crossfiring 6850's and could not sort it out so sent them back and got a 6970 but the odd thing is i then tried xfire with a 6950 and that works fine
 
Engy Benjie said:
But if I restart with corssfire enabled then it BSOD. Not a massive issue to disable it before shutdown,
Click to expand...

I have no idea how to fix your problem, but a possib;e workaround:

If you are using RadeonPro, you can set game profiles to activate crossfire on start, and switch off crossfire when you finish. It would save the hassle of manually disabling crossfire each time - if you can be bothered to set up the necessary radeonpro profiles.
 
Are you sure I should be disabling the Union of Liberal and Progressive Synagogues? (ULPS) :D

Will give it a go when I get home tonight. If it doesn't work i'll look into setting up some game profiles. Cheers for the help.
 
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