Re: wifi iwlagn fails to authenticate after wake from suspend

On Wed, 26 Oct 2011, Gene Smith wrote:

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.

So we need to bisect between 2.4.38 and 3.0.0? :)  I'm running ubuntu 
11.10 on a home laptop so I'll give this a try as well when I can if I can 
put up with unity for that long.

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).

Adding wireless folks to the cc.