Re: nm doesn't notice usb enet connect

[Dan Williams <dcbw redhat com>]

On Thu, 2006-11-09 at 06:40 -0500, Neal Becker wrote:
> Dan Williams wrote:
> 
> > On Wed, 2006-11-08 at 21:44 -0500, Neal Becker wrote:
> >> My wired enet has a bad connection, so I bought a usb2 enet adapter.  It
> >> works fine, but I think it points out a problem with nm.  It seems nm
> >> doesn't notice the new adapter on eth2 if I plug it in after startup,
> >> unless I restart nm.
> > 
> > Does your adapter use the ne2k driver or something?  Does the driver do
> > link detection?  NM certainly isn't going to use your adapter unless the
> > driver can do carrier detect.  Try 'mii-tool eth0' when a cable is
> > plugged in, or or 'ethtool eth0' and look for the "Link detected: "
> > line.  If your cable is in, but neither of those report a link, then the
> > driver likely needs fixing.
> > 
> > For example, NM won't work automatically in QEMU because the ne2k_pci
> > driver that suports the NE2000 hardware that qemu emulates doesn't
> > support carrier detect.
> > 
> 
> sudo /sbin/ethtool eth2
> Settings for eth2:
>         Supported ports: [ TP MII ]
>         Supported link modes:   10baseT/Half 10baseT/Full
>                                 100baseT/Half 100baseT/Full
>         Supports auto-negotiation: Yes
>         Advertised link modes:  10baseT/Half 10baseT/Full
>                                 100baseT/Half 100baseT/Full
>         Advertised auto-negotiation: Yes
>         Speed: 100Mb/s
>         Duplex: Full
>         Port: MII
>         PHYAD: 3
>         Transceiver: internal
>         Auto-negotiation: on
>         Supports Wake-on: pg
>         Wake-on: d
>         Current message level: 0x00000007 (7)
>         Link detected: yes
> 
> Driver is asix
> device is d-link EUB-E100

Found a few these lying around, and got the problem in a quick test.

One more thing to check; plug in a cable and do:

cat /sys/class/net/eth2/carrier

and see what that returns....

dan

> 
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