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Re: USB network adapter with no connectivity

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Hi:


> 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
>
>

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Thread

USB network adapter with no connectivity Angel Rengifo Cancino <arengifoc@gmail.com> - 2021-09-28 16:40 +0200
  Re: USB network adapter with no connectivity Dan Ritter <dsr@randomstring.org> - 2021-09-28 17:10 +0200
  Re: USB network adapter with no connectivity Reco <recoverym4n@enotuniq.net> - 2021-09-28 17:50 +0200
    Re: USB network adapter with no connectivity Angel Rengifo Cancino <arengifoc@gmail.com> - 2021-09-28 17:50 +0200
      Re: USB network adapter with no connectivity Reco <recoverym4n@enotuniq.net> - 2021-09-28 18:00 +0200
      Re: USB network adapter with no connectivity <tomas@tuxteam.de> - 2021-09-28 20:00 +0200
        Re: USB network adapter with no connectivity Angel Rengifo Cancino <arengifoc@gmail.com> - 2021-10-01 19:00 +0200

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