Re: Problem setup atheros wifi card using WPA TKIP

On Sun, 2010-02-21 at 20:48 +0100, Sam Lefebvre wrote:
> Can anyone help me? I’m already struggling with this problem during
> weeks.

Please set up your mail to send messages in plain text without HTML.  It
will be more readable that way, and easier to quote.

> I use the Atheros based WLM54AGP23 card, and use madwifi and
> wpa_supplicant to enable the card for using with WPA TKIP encryption. 

One possible thing is to try is ath5k instead of MadWifi.  ath5k is a
part of the kernel, and it should be quite good in Linux 2.6.31.  You
can load it by:

rmmod ath_pci
modprobe ath5k

> sam@Alix3d3:~$ uname -a
> 
> Linux Alix3d3 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 16:20:31 UTC
> 2009 i586 GNU/Linux

I think it's not the latest Ubuntu kernel, so you may want to upgrade,
even if it's not related to wireless drivers.

> sam@Alix3d3:~$ sudo nano /etc/wpa_supplicant.conf

You can use cat for that.

> rl_interface=/var/run/wpa_supplicant

I guess "ct" was lost.  I tried your config and I had absolutely no
problem connecting to an AP with TKIP as soon as I put the right ESSID
and password.  I tried both MadWifi (current trunk) and ath5k (current
wireless-testing).

> sam@Alix3d3:~$ sudo wpa_supplicant -Dwext -iath4
> -c/etc/wpa_supplicant.conf
> 
> Trying to associate with 00:30:bd:9a:04:da (SSID='belkin54g' freq=2462
> MHz)
> 
> Associated with 00:00:00:00:00:00

That's the first indication of trouble.  I suggest that you turn off
NetworkManager and kill any instances of wpa_supplicant that me be
already running.  I believe that's the most likely reason why
wpa_supplicant is failing for you.

> I get always the message 'WPA: 4-Way Handshake failed - pre-shared key
> may be incorrect', and I’m sure that my password is correct typed in
> the config file.

I think if wpa_supplicant gets the BSSID wrong, the encryption will
fail.

-- 
Regards,
Pavel Roskin

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