Re: [BUG] igb: reconnecting of cable not always detected

[Richard Cochran]

On Tue, Apr 24, 2018 at 11:09:02AM -0700, Alexander Duyck wrote:
> On Tue, Apr 24, 2018 at 8:14 AM, Holger Schurig <holgerschurig@xxxxxxxxx> wrote:
> > Sometimes, plugging the cable back in is detected ...
> >
> > [   43.736922] igb 0000:02:00.0 eth0: igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
> >
> > ... but sometimes this is *NOT* detected. I can put the cable in and
> > even after two minutes nothing has been detected.
> >
> > But when I run "rmmod igb" followed by "modpobe igb", the link is
> > detected again:

FWIW, I have noticed over the past months (or even years?) that my
i210 cards (or the igb driver) also fail to detect link changes after
a few physical link interruptions.  I never bothered to try and debug
this, but it is super annoying.

Thanks,
Richard