(In reply to Allan Cairns from comment #5)
> Created attachment 143815 [details]
> Additional dmseg logs
> 
> dmseg output for
> Xeno Kernel 5 with no DRM - Boots to second card Firepro
> Xeno Kernel 5.1 RC2 - Boots to first card Southern Island
> Xeno Kernel 4.20.16 - Boots to second card Firepro

Can you attach the full dmesg logs from boot?  These files are only partial
logs and don't include any of the information from when the drivers loaded (or
didn't).