Intel X540 dual onboard NIC not showing up

mike the newb

New Member
Aug 24, 2025
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I have a SuperMicro server with 4 onboard NIC's. Two are i350 and two are listed as i350/X540.
The straight i350's work fine, but the 540's don't show up. However, I get a link light and a "status:up" on my switch. I know that doesn't mean much, but pretty sure at least nothing is fried there. Motherboard is an X9DRW-3TF+.

I found this thread (below) that mentioned adding "pci=noaer" to grub, but I thought I'd see if anyone has any more recent experience with this oddity before I try it, and if there are any possible side effects to doing so?