Three things I notice:
First,
Booting core11 -
xhci_hcd 0000:00:10.0: xHCI Host Controller
xhci_hcd 0000:00:10.0: new USB bus registered, assigned bus number 2
xhci_hcd 0000:00:10.0: hcc params 0x014040c3 hci version 0x100 quirks 0x0000000000000410
xhci_hcd 0000:00:10.0: xHCI Host Controller
xhci_hcd 0000:00:10.0: new USB bus registered, assigned bus number 3
xhci_hcd 0000:00:10.0: Host supports USB 3.0 SuperSpeed
Bootling core12 -
Nothing
Second,
On core11 - 'lsmod' returns:
Module Size Used by Not tainted
cpufreq_conservative 12288 0
cpufreq_userspace 12288 0
cpufreq_powersave 12288 0
sdhci_pci 28672 0
cqhci 16384 1 sdhci_pci
squashfs 24576 0
zstd_decompress 73728 1 squashfs
pinctrl_amd 12288 0
pcspkr 12288 0
sdhci 32768 1 sdhci_pci
xhci_pci 12288 0
mmc_core 65536 3 sdhci_pci,cqhci,sdhci
ptp 16384 0
xhci_hcd 86016 1 xhci_pci
pps_core 12288 1 ptp
acpi_cpufreq 12288 0
loop 20480 0
On core12 - 'lsmod' returns nothing.
Third,
The newer kernels do not include
i2c in the kernel which prohibits the 'igb' driver from working.
[EDIT]: Added code tags. Rich