i’ve seen this in various models, not just Biostar’s, and in all case we had it was 1 or 2 dodgy PCI-e risers. The problem is a dodgy one is hard to locate, exspecially with 12 GPU’s. We useally replace them all and retest on a 4GPU rig to see which are broken … or just throw them away of their the pre V6 models as their dodgy anyways.
Also try diff PSU’s and make sure you have enough power. You can also set the TDW to 55% and use all cards. If its a high-end PSU usage issue in most cases this would just ‘work’ without problems.
Also are you using a CPU that supports enough PCI addresses? Not all do (!)
Finally:
Bus:Device:Function: 0x0:0x1B:0x0
Is this the same for all? This is a fixed slot which might be dodgy.
And try linux, my exp. is that it has more detailed error logging, but again … for us its 99,9% sure its a riser issue.
@godanubis Have you been able to make any improvements on this error? I am getting flooded with these errors also on the same board, I’ve been disconnecting cards all night to narrow it down.