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Date: Thu, 05 Apr 2012 20:25:29 +0200
From: =?ISO-8859-1?Q?Ortwin_Gl=FCck?= <odi@odi.ch>
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To: linux-wireless@vger.kernel.org
Subject: Re: 3.3.1 ath9k regression
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I am seeing similar symptoms as Michael Leun, using NetworkManager and ath9k 
built-in (not as a module):

Apr  5 20:09:14 mithril NetworkManager[2575]: <info> (wlan0): supplicant 
connection state:
   scanning -> associating
Apr  5 20:09:15 mithril kernel: wlan0: authenticate with xxx (try 1)
Apr  5 20:09:15 mithril kernel: wlan0: authenticate with xxx (try 2)
Apr  5 20:09:15 mithril kernel: wlan0: authenticate with xxx (try 3)
Apr  5 20:09:15 mithril kernel: wlan0: authentication with xxx timed out
Apr  5 20:09:17 mithril NetworkManager[2575]: <warn> (wlan0): link timed out.
Apr  5 20:09:25 mithril NetworkManager[2575]: <info> (wlan0): supplicant 
connection state:
   associating -> disconnected
Apr  5 20:09:25 mithril NetworkManager[2575]: <info> (wlan0): supplicant 
connection state:
   disconnected -> scanning
Apr  5 20:09:25 mithril kernel: ath: Failed to stop TX DMA, queues=0x001!


Reproducible 100% of the time. Reverting 
db6a6a78d8602964c9dfb1d8ce18daefd92da0a7 fixes the problem.

Hope that helps,

Ortwin