Re: 0.9.1.90 (on Ubuntu 11.10) fails to maintain wifi connection when multiple APs have same SSID.

[Dan Williams <dcbw redhat com>]

On Fri, 2012-02-24 at 14:19 -0600, Dan Williams wrote:
> On Mon, 2012-02-20 at 21:07 -0500, Jason Cipriani wrote:
> > I'm using NetworkManager 0.9.1.90 (it came with Ubuntu 11.10). I can't
> > establish a reliable wifi connection to a network with multiple APs
> > using the same SSID. dmegs shows immediate deauthentication with
> > reason 2 (authentication no longer valid), and I am repeatedly
> > prompted for a wifi password. I've Googled around but mostly only
> > found bug reports > 3 years old.
> > 
> > I'm fine on networks with one AP (I'm at work now tethering through my
> > phone because I can't use the network here when I'm running Ubuntu :/
> > ).
> > 
> > How can I make this work? It's hindering my job significantly.
> > 
> > Network adapter is: Realtek Semiconductor Co., Ltd. RTL8188CE
> > 802.11b/g/n WiFi Adapter (rev 01)
> 
> This looks like either a configuration issue (ie, the wifi settings or
> authentication information is wrong), a supplicant issue, or a kernel
> driver issue.  One thing to do is grab wpa_supplicant verbose debug
> output by following the directions here:
> 
> http://live.gnome.org/NetworkManager/Debugging
> 
> and seeing what the supplicant reports.  What kind of network is it?
> WPA-Enterprise?  If that's the case, the driver might be having problems
> with PMKSA or preauthentication, or an incompatibility with the backend
> RADIUS server.  But the supplicant logs might indicate that.

Ah, it looks like it's WPA-PSK?  Your logs have this:

> Feb 17 16:16:40 ubuntu wpa_supplicant[958]: WPA: 4-Way Handshake
failed - pre-shared key may be incorrect

which might indicate that the PSK you're using is incorrect?

Dan