On Wed, 2011-07-06 at 08:26 -0700, Ben Hutchings wrote:
> On Wed, 2011-07-06 at 16:53 +0200, Arkadiusz Miskiewicz wrote:
> > On Wednesday 06 of July 2011, Ben Hutchings wrote:
> > > On Wed, 2011-07-06 at 13:38 +0200, Arkadiusz Miskiewicz wrote:
> > > > 3.0.0rc6, thinkpad t400 notebook.
> > > > 
> > > > If there is no cable then ethtool reports no device. It wasn't that
> > > > before AFAIK.
> > > > 
> > > > ethtool version 2.6.36

snip

> Then the only other explanation I can think of is that the driver has
> 'detached' the device due to some kind of error.  The ethtool core does
> have a check for that.

could it be that aspm is enabled or that you've enabled runtime power
management?

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