Does "ip a" show BROADCAST,MULTICAST,UP or
BROADCAST,MULTICAST,MASTER,UP,NO-CARRIER?
This is how it looks:
6: enx42f2e9ecec39: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
> Any ideas? Is this USB 3.0 adapter supposed to work when connected to a USB
> 2.0 port?
If you're seeing something with the ethtool - this adapter certainly
does work somehow. You'd see the lack of NIC otherwise.
I'd start with disabling auto-negotiation (you do have ethtool, after
all), and forcing the link to 100 Mbps half-duplex. If it does work -
I'd try 100 Mbps full-duplex and only then I'd move to 1 Gbps. If it
does not - I suggest replacing your device with something USB
2.0-compliant, anything that uses asix kernel module should do.
Good idea. I'll do some tests with all these combinations of duplex, speed and auto-negotiation settings.
Oh, and check the Ethernet cable. These USB NICs are (in)famous for
inability to convert cross-over cables to straight ones and vise-versa.
I don't think I have cross-over cable at this moment, but I'll try directly connecting these two hosts with a direct and cross-over cable (I'll need to buy one).
Reco