On 25/01/13 12:14, stripes theotoky wrote:
> Dear Group,
>
> I have two Linux laptops with the latest updates to the most recent
> LTS Ubuntu distribution.
>
> 1). Samsung netbook. This uses the Broadcom wl wifi driver and works
> fine all the time everywhere.
>
> 2). Lenovo W520. This uses the iwlwifi driver and works on every
> network I have tried it on except Latrobe University. I have tried
> both LTUwireless2 or Eduroam. It is impossible to keep a connection
> to either of these (in La Trobe) for longer than about 2 minutes.
> Outside La Trobe Eduroam works just fine.
I suspect LTUwireless2 and Eduroam are effectively the same network but uses different user authentication.

R U able to try a second USB wifi adapter on the Lenovo, and see how it works?  That would eliminate the networking stack on your laptop and point to a problem between the iwlwifi driver and the LaTrobe network.
>
> The configuration settings are the same on both boxen.
>
> Up until a few months ago the W520 worked fine on the La Trobe
> network. IT support claim that no Linux box can connect to their wifi
> or ever could. As I was using it with the Samsung half an hour ago I
> know this is false.

Denial is useful sometimes!!

>
> Obviously something has changed but where to start looking, is it my
> driver, my hardware or has something changed on the network and if so
> what.
As I discovered recently, unattended upgrades on Ubuntu can lead to problems! .. Do you have unattended upgrade set up on the laptop?  But I am willing to bet something changed on the network.

Can you try booting a LiveCD on the Lenovo?
>
> Ideas most welcome
>
> Stripes
>
>
>
>
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