PTK cipher mismatch

Mihai Maties mihai
Wed Jun 7 10:18:39 PDT 2006

On Wednesday 07 June 2006 14:29, Mihai Maties wrote:
> Hi,
> I just upgraded my laptop from Ubuntu Breezy to Ubuntu Dapper and noticed
> that I cannot use the wireless network anymore. Before upgrading, I used
> wpa_supplicant to authenticate (LEAP), but now I cannot connect. Of course,
> I tried exactly the same configuration file, but since it didn't work, I
> began "tuning" parameters... unfortunately without success.
> Things that got upgraded are:
> - the kernel - from v2.6.12 to v2.6.15
> - the ipw2200 driver - from v1.1.0 (manually compiled) - to v1.1.1
> - wpa_supplicant - from v0.4.5 to v0.4.8
> One major thing that changed and needed adjustment in my conf file was the
> transition from "ipw" to "wext". After studying the debug output I see that
> even though the SSID matches, all access points are ignored with a
> message "skip WPA IE - PTK cipher mismatch".

One addition, maybe it helps: I can succesfully connect to another wireless 
network that uses WPA-PSK.

So it seems that only something related to LEAP is broken.


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