Centrino wireless woes

Stephen R Laniel steve at laniels.org
Mon Jun 6 14:22:48 UTC 2005

On Mon, Jun 06, 2005 at 02:17:43PM +0100, GyroTech wrote:
> scanning reveals my network. I enter in all the WEP keys correct 
> settings, but it just never seems to be able to pick up a DHCP lease or 
> (if I configure static IP) ping any of my network. Not even when I 
> disable WEP and allow any SSID will my laptop connect even though it has 
> a high signal strength and selects the correct speed (54Mbps).

1) Check if it's the router: if you have a wired card on
your laptop, plug directly into the router and see if you
can get DHCP then.

2) If you can get a lease, check whether the wireless card
can get a DHCP lease from any routers other than your own.
This will help establish if the card is the trouble.

3) Confirm that the driver is loaded. Do

lsmod |grep -i ipw2200

and see if anything comes back. That sounds like the driver
you're using.

4) Confirm that all the other required modules are loaded as
well, and that the right IPW2200 firmware is in the right
place. (The right place is /usr/lib/hotplug/firmware .)

5) What's in /etc/network/interfaces? Please include a copy
of that.

6) Is the wireless-tools package installed? Do

dpkg --get-selections |grep wireless-tools

7) What happens if you do

sudo iwconfig eth0 essid any
sudo ifdown eth0
sudo ifup eth0

? Please include the output here.

That will get us started.

Stephen R. Laniel
steve at laniels.org
+(617) 308-5571
PGP key: http://laniels.org/slaniel.key

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