LAN not working on brand new T400s

[damonlynch]

Is there something special I need to do to get the LAN adapter up and runnning? It doesn't work under Windows 7 or Ubuntu. Packets get sent out, but nothing comes back. It's never worked.

I'm hoping it's not a hardware problem, and something just needs to be configured correctly in the bios. But I didn't see anything likely. Any ideas, anyone?

[personalgeeks]

try unistalling the lan drivers in hardware profiles, then reinstall using the drivers from manufacturer.  My wireless did not work when my t400s showed up, I retreived the drivers from the intel website and was able to get it working just fine.

[damonlynch]

That was a good idea, thanks. I installed the latest Intel drivers. The problem was not solved, as I expected (because it doesn't work under Ubuntu either). However the Intel drivers have some diagnostic features, which the standard drivers lack. Interestingly it passed all the diagnostic tests, yet it still fails to connect (sends a bunch of packets out, and gets nothing back). I guess I will need to contact customer support.

[Lurkios]

The internal system tests are capable of testing everything up to the actual transmission portions of the circuitry. They utilize 127.0.0.1, the systems loopback address, meaning they don't actually send anything during the test or get anything from outside the system.

This means that while the internal networking is working properly, your fault likely lies in the jack itself or the related circuitry. Hardware.

To be sure, you might try running a program such as Wireshark while the laptop is connected to a router or switch through the LAN port to see if it's getting anything at all, even garbled data.

WIRESHARK: http://www.wireshark.org/download/win32/wireshark-win32-1.2.4.exe

My moneys on a bad network card.