BLUF: Instead of buying a card and forcing an outcome through hours and days of troubleshooting, I would rather take the advice of the community and pick a GPU that isn't a troublemaker and easy to use and work with.
I looked through the forums and didn't see (I am not good as using forums)...
So I appreciate the assistance, sometimes you just need to walk away from a situation and come back with fresh eyes.
Buried in the BIOS was an option for the LAN controller to disable the onboard interfaces if a NIC was installed in the PCI-E slot.
Sorry for dragging you all into my nightmare...
As requested, below are the txt dumps for both the (dmesg) and (ip -d link show) commands both with and without the NIC installed.
It appears that the hardware isn't seeing the onboard interfaces once the NIC is installed.
BLUF: The onboard interfaces register in linux/Proxmox as well as an additional NIC but just not at the same time.
I have a X9DRD-LF-TW008 that I aim to use as an external server/firewall with Proxmox hosting pfSense among other things. The motherboard comes with two interfaces and an...