Re: NETDEV WATCHDOG: eth0: transmit timed out

[Andrew Morton]

Caleb Epstein wrote:
> 
>         I am seeing the following error after my machine has been up
>         for a while.  My eth0 is connected to a switched, local
>         subnet.  There is not a lot of traffic on the interface, maybe
>         a few 100 Mbytes or so.  Taking the interface down and then up
>         again fixes the problem (until it happens again :)
> 
>         Here is the relevant section from my kernel log
> 
> Mar  1 10:48:44 tela kernel: NETDEV WATCHDOG: eth0: transmit timed out

My guess would be that the driver has decided there's no
link beat on the 10baseT interface and has flopped over
to using 10base2.  A fix for this exists in 2.4.2-ac5+,
in the zerocopy patch and in

	http://www.uow.edu.au/~andrewm/linux/3c59x.c-2.4.2-pre4.gz

but not in 2.4.2.

You'll need to use

	options 3c59x options=0

in /etc/modules.conf to pin the driver down to using a 
particular physical interface - disable autoselection.

So could you please upgrade the driver?  If problems
remain, please send me a report, as described in the
final section of Documentation/networking/vortex.txt.

Thanks.

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