Re: NETDEV timeout on tulips [was: Re: 2.4.1-test10]

[Matti Aarnio <matti.aarnio@zmailer.org>]

On Tue, Jan 23, 2001 at 11:13:48AM +0000, David Ford wrote:
> > > The three cardbus cards are slightly different in numerous ways.  For
> > > them they normally fault with an APM event, an eject/insert cycle via
> > > software will reset hem and a link down/up won't fix it.  For the PCI
....
> > > The PCI cards are hard to get into this state, sometimes they'll run
> > > millions of packets for months on end before they'll burp.  Sometimes
> > > it'll happen three times a night.  The amount of traffic doesn't seem
> > > to matter, nor does the type of traffic.
> >
> >         Sounds like timing issue.
> 
> Hmm, should we class these as two similar but different bugs?  I suspect they
> are both timing but there is another stimulus operating differently.

  I think they are separate problems.
  The first is power-management suspend/resume issue, and possibly
  PCMCIA problem at software re-insert of card (which never was taken
  out *physically*).

  If I pull the cardbus card out, make sure the  "dhcpcd eth0" has
  died (e.g. I kill it), and re-insert the card, system is highly
  likely to work.

  It is just that if I suspend my laptop with card in, and wakeup it
  latter, there I encounter dead network card.


  Hangup/barfing on system which never suspends will never excercise
  suspend/resume codepaths, but may poke at wrong moment at some register,
  which causes card severe indigestion problems - rx/tx hangup.

  Sadly a "100% Compatible" usually means: "beware odd problems"

> -d

/Matti Aarnio
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