On my HTPC running Leap 15 my network connection has gone. Yast gives "Not connected" for the ethernet device, does permit configuring of it, but no connection is made.
I added a second Ethernet adapter, but that also gives the same result.

It's not the cable: if I connect that to a raspberry, the connection is fine.

I don't see anything regarding this in dmesg, apart from the finding that the connection is not available.

I've configured network devices through Yast many times, and never encountered this. Can I have overlooked something, or is it definitively a hardware thing?
Something that affects both the Ethernet device on the mb itself, and the second device in the PCI-slot?

Like to have your opinion!

regards, jehojakim