wifi iwlagn fails to authenticate after wake from suspend

[Gene Smith]

Now after upgrade to Ubuntu 11.10 when resume from suspend, wifi fails 
to reconnect saying waiting for authentication. When I use older kernel, 
2.4.38 instead of the new 3.0.0, it still works OK. If using ethernet, 
after wake from suspend it always works OK.

More details on this bug are here
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/880648
and here
https://bugzilla.redhat.com/show_bug.cgi?id=7374

Tried new Ubuntu kernel 3.1-rc10 did not help. Did not try an alternate 
kernel with Fedora 15.

The common failure messages seen with Ubuntu and Fedora is this:

<info> (wlan0): device state change: need-auth -> failed (reason 
'no-secrets') [60 120 7]
Oct 24 01:20:00 hplt NetworkManager[1016]: <warn> Activation (wlan0) 
failed for access point (dbnet)

After this occurs, no further attempt to authenticate wifi occur and a 
red X appears over the wifi icon. I must then use ethernet (or reboot).

-gene


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