Centrino wireless woes

GyroTech gyrotech at freakinabox.com
Mon Jun 6 16:30:39 UTC 2005

Stephen R Laniel wrote:
> 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.
Should have mentioned that... The wired network works fine, as it was 
the way I downloaded the sourceforge drives and accessed the howto in 
the first place :-) eth0 is the wired interface, eth1 wireless...

> 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.
Well I figured since my housemate is using his laptop on my router 
without problems it pretty much singled it ot the wireless card.

> 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.
ipw2200         133100 0
firmware_class    9984 1 ipw2200
ieee80211        36388 1 ipw2200

> 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 .)
I know I put the firmware in the right dir (it reminds you when you 
compile the drivers) but specifically what other required modules are 

> 5) What's in /etc/network/interfaces? Please include a copy
> of that.
interfaces is scarily empty (i removed comment lines)...

# begin
auto lo
iface lo inet loopback

mapping hotplug
         script grep
         map eth0

iface eth0 inet dhcp

I assume this is (hopefully) because KWiFiManager stores the configs 
elsewhere and applies them in it's own little way, but I can't seem to 
find any documentation in that respect.

> 6) Is the wireless-tools package installed? Do
> dpkg --get-selections |grep wireless-tools
yup, installed :-)

> 7) What happens if you do
> sudo iwconfig eth1 essid any
No output...
> sudo ifdown eth1
ifdown: interface eth1 not configured
> sudo ifup eth1
ifup: interface eth1 not configured

So, I'm guessing that KWiFiManager is not doing things in a nice way and 
I'm going to have to configure everything by hand??



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