[ath9k-devel] Frequent TKIP MIC failure

[ath9k-devel] Frequent TKIP MIC failure

[Christoph Wiedemann]

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

[ath9k-devel] Frequent TKIP MIC failure

[Adrian Chadd]

Hi,

On 9 November 2011 15:11, Christoph Wiedemann <wiedeman@gmx.net> wrote:
> 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.

Can you please create another kernel.org bugzilla ticket to track this?

This "hardware encryption breaks stuff" problem is annoying me enough
that I may try to fix it..

Thanks,


Adrian