[SOLVED] Crossfire isn't working

[KhanTyranitar]

So I just rebuilt my system, it had an older motherboard with a second gen i5, but was starting to show its age. I had it working with dual Sapphire Pulse RX580 cards set in crossfire. I just bought an MSI B450 Tomahawk MAX, which according to its specs and documentation supports Crossfire.

However My system does detect both cards but does not enable the crossfire option. Is anyone familiar with this problem?

Things Ive already tried.
Updating the BIOS
Reinstalling the AMD Radeon software
Tried older versions of the Radeon software
Updating all drivers

Still nothing. It sees both GPUs, just it doesn't have an option to enable Crossfire.

 

[kanewolf]

So I just rebuilt my system, it had an older motherboard with a second gen i5, but was starting to show its age. I had it working with dual Sapphire Pulse RX580 cards set in crossfire. I just bought an MSI B450 Tomahawk MAX, which according to its specs and documentation supports Crossfire.

However My system does detect both cards but does not enable the crossfire option. Is anyone familiar with this problem?

Things Ive already tried.
Updating the BIOS
Reinstalling the AMD Radeon software
Tried older versions of the Radeon software
Updating all drivers

Still nothing. It sees both GPUs, just it doesn't have an option to enable Crossfire.

Did this build start with a clean OS install?

 

[KhanTyranitar]

Did this build start with a clean OS install?

Yes it is a clean install.

 

[COLGeek]

Did you install the AMD chipset drivers?

https://www.amd.com/en/support/chipsets/amd-socket-am4/b450

 

[KhanTyranitar]

Did you install the AMD chipset drivers?

https://www.amd.com/en/support/chipsets/amd-socket-am4/b450

Absolutely.

 

[KhanTyranitar]

I’ve still had no luck. When I bought this motherboard it specifically said it supported Crossfire.

 

[Wolfshadw]

MSI B450 Tomahawk MAX User's Manual

What processor do you have installed with your new motherboard?
Do you have an expansion card installed between the two RX 580s?

-Wolf sends

 

[KhanTyranitar]

MSI B450 Tomahawk MAX User's Manual

What processor do you have installed with your new motherboard?
Do you have an expansion card installed between the two RX 580s?

-Wolf sends

My CPU is a Ryzen 5 2600. Actually yes, I do have a WiFi/Bluetooth card installed between the two cards.

 

[Wolfshadw]

Unfortunately, that is likely the problem:

PCI_E4 will run x2 speed when installing devices in PCI_E2/ PCI_E3 slot.

Ref: Pg 30 of the User's Manual

For Crossfire to work, the second slot needs to be at least x4 speed. Try removing the card to see if Crossfire is available

-Wolf sends

 

[KhanTyranitar]

Ok. I’ll try that tonight and let you all know the result.

 

[KhanTyranitar]

Ok. Just a follow up update. Removing the WiFi card did resolve it. Crossfire is now detected and enabled.