X710-AT2 onboard not working on Ubuntu 22.04/Debian

[drv41]

Hello, I need help with the X710-AT2 (on an Asrock E3C256D4U-2L2T board). It doesn't work on Ubuntu 22.04/Debian/Proxmox, but it works under Feroda. So I think it is a problem with the operating system, drivers or network card configuration. I have the latest NVM (9.30), i40e (i40e-2.23.17) and iavf (iavf-4.9.1). LLDP along with all network management is disabled in BIOS. The network card is seen by the operating system, but I cannot get any traffic thought. I get rx_dropped packets on the interface, but rather none are transmitted. The interface tries to get an IP via DHCP, but mostly fails; sometimes it does, but no TCP transmission seems go thought. I managed to get it to work twice, probably by accident, when I experimented with the settings `ethtool -G eth12 rx 256 tx 256; ethtool -C ethX adaptive-rx off adaptive-tx off rx-usecs 0 tx-usecs 0`. The working state did not survive the reboot, and the commands that made it work (or anything else) did not make it work again.

I forced a vlan ID on the switch port along with the only untagged option. I thought all this behaviour might have something to do with VLANs, but connecting the interface to another router with no VLANs configured doesn't let any traffic through either.

Normally I'd say it's some kind of hardware problem (switch/cable/interface), but the interface works on the latest Fedora 38 LiveCD every time, after multiple reboots, and it's forwarding packets without any errors visible on the switch.

[Faez_Intel]

Hi drv41,

We will proceed with the closure of this thread for now.

Please do not hesitate to get in touch with us if you have any other inquiries.

Thanks,

Faez_Intel