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ATI Control Center doesn't detect 2 GPUs on Xfire system

Tags:
  • Radeon
  • GPUs
  • ATI
  • Graphics
Last response: in Graphics & Displays
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May 28, 2010 10:57:45 AM

For some reason, the drop down on the Catalyst Control Center that allows you to select your GPU doesn't show that I have 2 GPUs installed on my computer. When I run GPUz, it tells me that I have 2, but the driver does not. Worse still, the driver gives me conflicting information about the cards. In the information section, it tells me that both GPUs are clocked at 625 MHz and Memory at 993 MHz. But when I click over to the ATI Overdrive section, it tells me that my single GPU (because, remember, I can't select the second) is actually running at 500 MHz GPU/750 MHz RAM.

On top of all this, the diagnostics tab in the ATI Crossfire page is completely blank and the ATI Overdrive page is pretty much non-functional. Now that I unlocked the stupid thing, I can't lock it back up or turn off overclocking. What gives? Is it my driver or is something else jacked up?

My Rig:

CPU: AMD|ATHLON II X4 630 AM3 RT
GPUs: 2x VISIONTEK 900241 HD4850 512M RT
RAM: 2Gx2|OCZ OCZ3OB1600LV4GK RT 4 GB kit
Sound: ASUS XONAR D1 RT
Mobo: ASUS M4A79XTD EVO 790X AM3 RT
Case: ANTEC|THREE HUNDRED ILLUSION R
PSU: CORSAIR|CMPSU-650TX 650W RT
DVD: Random super-multi drive I had

ATI Driver Info:
Driver Packaging Version 8.732-100504a-099996C-ATI
Catalyst™ Version 10.5
Provider ATI Technologies Inc.
2D Driver Version 8.01.01.1030
2D Driver File Path /REGISTRY/MACHINE/SYSTEM/ControlSet001/Control/CLASS/{4D36E968-E325-11CE-BFC1-08002BE10318}/0000
Direct3D Version 8.14.10.0753
OpenGL Version 6.14.10.9836
Catalyst™ Control Center Version 2010.0504.2152.37420

Graphic Hardware Info:
Primary Adapter
Graphics Card Manufacturer Built by ATI
Graphics Chipset ATI Radeon HD 4800 Series
Device ID 9442
Vendor 1002

Subsystem ID 0502
Subsystem Vendor ID 1002

Graphics Bus Capability PCI Express 2.0
Maximum Bus Setting PCI Express 2.0 x8

BIOS Version 011.003.000.000
BIOS Part Number 113-B50102-103
BIOS Date 2008/05/23

Memory Size 512 MB
Memory Type GDDR3

Core Clock in MHz 625 MHz
Memory Clock in MHz 993 MHz
Total Memory Bandwidth in GByte/s 63.6 GByte/s


Linked Adapter
Graphics Card Manufacturer Powered by ATI
Graphics Chipset ATI Radeon HD 4800 Series
Device ID 9442
Vendor 1002

Subsystem ID 4272
Subsystem Vendor ID 1545

Graphics Bus Capability PCI Express 2.0
Maximum Bus Setting PCI Express 2.0 x8

BIOS Version 011.010.000.002
BIOS Part Number 113-BA01XXX
BIOS Date 2009/01/19

Memory Size 512 MB
Memory Type GDDR3

Core Clock in MHz 625 MHz
Memory Clock in MHz 993 MHz

More about : ati control center detect gpus xfire system

May 28, 2010 11:37:25 AM

Hi,

as 10.5 is very new, uninstall it and try 10.4.

Do you have another crossfire bridge to test?

If not working, I see that your cards are not on the same bios version.

A friend had trouble few years ago with a 8800gts sli because of different bios on 2 identical cards.

You may have to flash them to most recent bios from the manufacturer.

Regards,

Brad
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May 28, 2010 7:24:51 PM

I was in the process of doing that (trying older drivers). I made an interesting discovery when I went to the AMD/ATI Xfire compatibility chart - it turns out that for two 4850s that, according to the chart, you don't need a bridge. So, I removed my bridge and, lo and behold, the diagnostics tab lights up on the CCC telling me that I need to install both bridges. Apparently my other one went missing during the install, so I've been turning my room upside down trying to find it. I've heard of odd issues depending on the number of bridges used and maybe this is indicative of a problem.

Or it could all come down to the BIOS question. Who knows? It's also worth noting that, with the sole exception of the BIOS that these appear (on paper) to be the exact same card. They are not. One of them definitely looks newer: it has a huge heatsink/fan combo on it. The other one has a plastic encased fan and air direction system. Also, one has an HDMI port and a DVI port (the newer one) and the other does not (just 2 DVI ports).

Even GPUz can't tell the difference when checked, which is very curious. Do you think I should RMA the clearly older one?

I'm currently looking in to getting these things flashed. I'd be appreciative if you or anyone else has anymore ideas. Thanks!
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May 29, 2010 9:36:03 AM

<baleeted>: Redundant.
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May 29, 2010 9:46:15 AM

Another question for those who have CrossFire running: Is the driver supposed to show you two items in the driver's dropdown list if you're CrossFiring? Or does it only show you the ones that a display is connected to? I don't have an extra display to try it, or I would.
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May 29, 2010 9:55:19 AM

I'm having exactly the same problem despite that fact that everything worked just fine this morning. All I've done different is change primary hard drives and reinstall everything to a x64 windows 7 OS instead of the old 32 bit system.

I *think* you're actually not having a problem. Overdrive has always been stuffed. Don't use it.

In the 10.4 or whatever driver I must have used to have, I could make it should me 2 GPUs in the drop down boxes. Now... it will only show me one. I read online a bunch of kids (sure they were kids with the arrogance they threw at the poor guy having issues) saying that the CCC sees a xfire setup like a pair of RAID drives.

When I right click on the tray icon, it does show me the two cards but not if I open CCC. This is such a p*ss off as I prefer to be sure (at a single glance, not by running GPUz)
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