Re: Problem with NetworkManager, Ubuntu Edgy Eft and the bcm43xx driver

[David R Mulligan <david mulligan shaw ca>]

On Sun, 2006-17-12 at 11:07 -0500, Dan Williams wrote:
> On Fri, 2006-12-15 at 12:12 -0700, David R Mulligan wrote:
> > I am writing this message partly in case others are having the same
> > problem.
> > 
> > If I leave my Dell Latitude D600 laptop with Dell 1450 wireless card
> > idle for a while, usually at least a couple of hours, I will start to
> > get this message repeated over and over in /var/log/messages "NETDEV
> > WATCHDOG: eth1: transmit timed out."  There are no other messages that
> > are obviously related and nothing else is logged between the netdev
> > messages.  When this happens my keyboard is dead and I am lucky if I can
> > shutdown my computer using the mouse to select shutdown (or anything
> > else for that matter.)
> > 
> > According to this thread network manager may be involved
> > http://lkml.org/lkml/2006/11/15/296 .  Either way my work around is to
> 
> That particular issue is a softmac locking problem, and not related to
> NetworkManager, though NM will cause the problem to happen more often.
> The real problem is that the softmac stack (which the driver for your
> card appears to use) can't correctly handle two different programs
> asking it for information at the same time.  There were a few driver
> patches posted that could resolve the issue.

You have to love thread safety or concurrency issues.

> Dan
> 
> > disable wireless through the nm-applet left click menu.  Fn-f2 to
> > disable the radio is not enough to stop the problem from happening.
> > Since disabling wireless through nm stops the problem seems to indicate
> > that nm is in some way at least a catalyst for the problem.
> > 
> > Thanks,
> > David
> > 
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>