I got the board yesterday and can't get more than one to work. Have also tried the latest BIOS and Beta BIOS with 4G decoding etc. but nothing works.
I also made your IOMMU settings, even without success.
for which board?
I want to get the MSI X370 GAMING PRO CARBON for 4x Vega 56 and possibly 6 pieces later
who can confirm that the board can handle 6 GPUs?
MSI released a new bios to support "above 4g decoding" that may help to recognize more gpus.
Hello,
I had previously written on this thread that I could not get the MSI X370 GAMING PRO CARBON working with more than 1 card, or even 1 card in some situations.
My problems disappeared when I disabled IOMMU in the BIOS. After I disabled the IOMMU in the BIOS, everything worked correctly, no more kernel issues, and I have been running it with 4 cards for a few months now.
NOTE: It is a gaming oriented card, and has a high power-consumption. This makes it less than ideal for mining, but it gets the job done.