Supermicroserver (X12SPM-TF) - no 10GB ethernet after BIOS update

Sep 3, 2021
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I have a Supermicro server with and X12SPM-TF motherboard with as network controller a dual LAN with 10 GBase-T with Intel X550. Running Proxmox PVE enterprise latest.

Running on BIOS v1.6 or lower the 10GB ethernet connection is working as expected. However after an update to BIOS v1.9 or v2.1 the 10GB ethernet ports are not working (the 1GB ports are still working).

Any users with the same experience or any idea how to resolve this issue?

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John