Intel PRO/WIreless 2200bg wireless problems.

Jan Moren jan.moren at
Wed Jun 14 23:12:58 UTC 2006

ons 2006-06-14 klockan 18:02 -0400 skrev Lee McLain:
> Hey everyone,
>    I have two laptops with the Intel PRO/Wireless 2200bg mini-pci
> internal card.  Under Breezy, they both worked fine, connecting to
> open and WEP encrypted APs just fine.
>    Now, under Dapper, both of these machines can no longer connect to
> WEP encrypted APs and Network Manager doesn't even recognize the
> interface(which is eth1). 

I use that hardware and it works fine under Dapper.

However, I did have a problem when switching from Breezy and also
switching to Network Manager from the "normal" network infrastructure in
Breezy. The symptom was the same.

Go to /etc/network

There you have a file "interfaces", with settings (inlcuding your WEP
key) for the interfaces. Make a copy of the file for backup, and make a
new file (or just comment out all else) only containing:

auto lo
iface lo inet loopback

It seems Network Manager does not want to deal with interfaces that are
also handled by the other network management system. This fixed it for

Dr. Jan Morén (mr)              
Japan:  090-3622 8920           jan.moren at
Sweden: 031-360 7723  

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