From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Wiedemann <wiedeman@gmx.net>
Date: Thu, 10 Nov 2011 00:11:34 +0100
Subject: [ath9k-devel] Frequent TKIP MIC failure
Message-ID: <4EBB08A6.8020208@gmx.net>
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To: ath9k-devel@lists.ath9k.org

Hello,

sorry for jumping up on this very old thread, but I see a very similar 
thing on my new SONY VAIO laptop. dmesg outputs

[  200.502509] wlan0: deauthenticated from 00:1c:28:0d:59:2a (Reason: 14)
[  200.513840] wlan0: deauthenticating from 00:1c:28:0d:59:2a by local 
choice (reason=14)

The problem seems to be correlated with high bandwidth traffic (>1MB/s). 
Chipset is

02:00.0 Network controller [0280]: Atheros Communications Inc. AR9485 
Wireless Network Adapter [168c:0032] (rev 01)

Disabling hwcrpyt as suggested in 
http://www.mail-archive.com/ath9k-devel at lists.ath9k.org/msg04221.html 
seems to fix the problem.

I thought that this would be interesting to you. Thank you very much.

Christoph