netdev - Re: No link on e1000e with 2.6.35.3 and ThinkPad T60

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Date:	Thu, 26 Aug 2010 13:27:32 +0200
From:	Marc Haber <mh+linux-kernel@...schlus.de>
To:	"Tantilov, Emil S" <emil.s.tantilov@...el.com>
Cc:	Linux Kernel Developers <linux-kernel@...r.kernel.org>,
	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>
Subject: Re: No link on e1000e with 2.6.35.3 and ThinkPad T60

On Wed, Aug 25, 2010 at 12:01:40PM -0600, Tantilov, Emil S wrote:
> Marc Haber wrote:
> > On Sat, Jul 24, 2010 at 11:26:44AM +0200, Marc Haber wrote:
> >> Additionally, sometimes, probably after suspend/resume, the wired
> >> ethernet does not come up properly again, ip addr claims "NO CARRIER"
> >> even if the LEDs on the interface and on the switch claim that there
> >> was a link. No packets are received by the interface when it's at
> >> this stage.
> > 
> > As of 2.6.35.3, this issue has become worse. It now even happens
> > directly after freshly booting the system that I cannot get a link on
> > the wired ethernet.
> > 
> > What information do you need to find out what's going on there?
> 
> Can you please post the output of dmidecode?

Attached.

> We have a tool that you can use to dump the registers from the port in the failed state:
> http://sourceforge.net/projects/e1000/files/Ethregs%20-%20Register%20Dump%20Tool/ethregs-1.12.3/

Attached, for an interface in the working state. I'll deliver another
regdump when I see the issue again.

> I have not been able to reproduce any of the issues you reported on
> T60 here in the lab, so we need to start looking into more details.
> 
> Also, could you please file a bug at e1000.sf.net with all the
> information you provided so far?

Will do in the next days.

I guess it would be better to file two bugs, one for the crashes and
one for the no-link-in-some-situations issue, right? Or is it likely
that they both have the same cause?

Greetings
Marc

-- 
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Marc Haber         | "I don't trust Computers. They | Mailadresse im Header
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View attachment "20100826-ethregs" of type "text/plain" (20794 bytes)

View attachment "20100826-dmidecode" of type "text/plain" (13345 bytes)