linux-kernel - RE: No link on e1000e with 2.6.35.3 and ThinkPad T60

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Date:	Tue, 7 Sep 2010 13:15:09 -0600
From:	"Tantilov, Emil S" <emil.s.tantilov@...el.com>
To:	Marc Haber <mh+linux-kernel@...schlus.de>
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

Marc Haber wrote:
> Hi,
> 
> On Thu, Aug 26, 2010 at 11:22:45AM -0600, Tantilov, Emil S wrote:
>> As far as the crashes go - it would help a lot if you can get a
>> trace. You can use a serial console if you have a docking station
>> for the T60. 
> 
> I have indeed recently bought a docking station. How do I obtain a
> trace from a frozen sysem?

The idea is to catch any output that may be pertinent to the crash. With some luck the hang would be associated with a trace which you can record by using a serial console. 

Check out the serial-console.txt file for more info in the Documentation section of the kernel source. Once you have your primary system configured you can connect via serial cable to a secondary system with minicom (or other terminal that can read from serial port) to be able to capture the trace.

> 
> Greetings
> Marc

Thanks,
Emil