Disabling Crossfire on 5970

[shayan288]

Sup,

So I need to disable crossfire on my 5970 running 11.2 drivers for the Crysis 2 flickering problem to stop.

I was just wondering how I would go about doing that on this new 11.2 Catalyst Control Center Application.

All what I see for the Catalyst A.I. section is

Texture Filtering Quality:


[Performance] [Quality] [High Quality]

( ) Enable Surface Format Optimization

( ) Disable AMD CrossFireX power settings



So what should I have ticked and selected to disable crossfire (make only one of the GPU's on my 5970 run so the goddamned flickering will stop.

Thanks in advance!

[JD]

You don't have a "AMD CrossFireX Configuration" option under "Gaming"?

That's where you should disable it. Disabling Catalyst AI doesn't disable Crossfire that I'm aware of.

[shayan288]

I don't have that for some reason...

[BrutalGreen]

The 5970 has its own internal multigpu system that is slightly different from "crossfire" that it why it isn't branded as crossfire and you don't have the same UI. However, turning Catalyst A.I. off should in theory disable this "internal crossfire" from what I've heard in the past...

[shayan288]

Originally Posted by BrutalGreen

The 5970 has its own internal multigpu system that is slightly different from "crossfire" that it why it isn't branded as crossfire and you don't have the same UI. However, turning Catalyst A.I. off should in theory disable this "internal crossfire" from what I've heard in the past...

But HOW do I turn off Catalyst A.I.? Like what do I tick or select?

[BrutalGreen]

there should be an option in CCC to set A.I. to "advanced", "standard" or "disable"...its under the 3d tab if i recall (haven't used an AMD card for a few months now sry).

[shayan288]

Yeah, it used to have those options in the 10 series of CCC. But now, with 11.2, it has been changed to what I have written above.

[bjohannes]

The recommended fix out there is to rename the Crysis exe file to Bioshock.exe.

If you happen to be running Crysis 2 through Steam, you can create a profile for the Crysis2 exe in Radeon Pro based on the Bioshock profile.

Worked like a charm for my 6970's in Crossfire!

[Snarl]

Originally Posted by bjohannes

The recommended fix out there is to rename the Crysis exe file to Bioshock.exe.

If you happen to be running Crysis 2 through Steam, you can create a profile for the Crysis2 exe in Radeon Pro based on the Bioshock profile.

Worked like a charm for my 6970's in Crossfire!

Solved my problem too for my 6970's in Crossfire (The RadeonPro fix in my case)

[BrutalGreen]

this might be a little more complicated but in your registries find:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000

or 0001 or 0002 check that the display device is ATI/AMD.

Change values:
UMD\:
REG_DWORD: CatalystAI = 30 00 00 00

and restart CCC by:
"C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\MOM.exe" Restart

you could do the same effect at:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Video

but there's {GUID} so you would have to locate the AMD/ATI entry where there is at least 0000->0002 entries and Video\ 'Service'-key states 'amdkmdag'.

You must have same location value called 'Main3D' as '0' because otherwise this will automate the AI back up.

Not sure this will work, but alternatively you could try to disable one of the GPUs via device manager and that would be much simpler...