Hi. On Tue, Sep 28, 2021 at 09:36:08AM -0500, Angel Rengifo Cancino wrote: > I'm running Proxmox 7 which is based on Debian Bullseye (11).
Yet it uses their kernel, not the one provided by Debian. Given the nature of the your problem, it is an important distinction. > According to what ethtool reports, there's Link detection on this network > adapter. Does "ip a" show BROADCAST,MULTICAST,UP or BROADCAST,MULTICAST,MASTER,UP,NO-CARRIER? > 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. 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. Reco
