Arc Pro B60 + Arc B580 in dual GPU setup: Arc Pro driver 6979 doesn't recognise B580

[gethen]

I have a Sparkle Arc Pro B60 24Gb GPU, a solid card and running fine in my set up with Arc Pro driver 101.6979.

I thought I'd see how a dual card setup would work to provide more VRAM, and added in an Intel Arc B580 LE. My system didn't recognise the second card, it showed up in Device Mgr as present but status Unknown.

Then I spent an hour+ trying to figure out if there was a hardware/BIOS/PCIe problem, and then randomly thought "I wonder if it's because I'm mixing a pro card and a consumer card, maybe I should try the non-pro consumer driver..?"

Problem solved by installing Arc driver 101.8247, both cards showing as present/OK and everything now works fine.

Intel, please go faster to mature your driver stack and fix this bug in the Arc Pro driver!

My HW setup in the pics. And I'll probably buy another B60 so I'm not mixing cards 🙂

[gethen]

Update: I updated to 101.8250 driver, and the PC routinely boots okay and recognises both GPUs initially, but within a few minutes the B580 drops out of existence.

Very frustrating.

I've been back through HW set up and both cards enumerate and BIOS/ASPM/PCIe settings are correct and verified, so difficult to identify it as anything except a driver issue?

Someone from Intel and/or smarter than me... Please help!