Date: Mon, 5 Jan 2009 11:41:02 +0200
From: Jouni Malinen <j@w1.fi>
To: "W. van den Akker" <listsrv@wilsoft.nl>
Cc: linux-wireless@vger.kernel.org
Subject: Re: Still problems to get ath9k in accessmode. Kernel hangs
Message-ID: <20090105094102.GA27836@jm.kir.nu> (sfid-20090105_104112_027295_26E33B48)
References: <200901011444.20333.listsrv@wilsoft.nl>
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On Thu, Jan 01, 2009 at 02:44:20PM +0100, W. van den Akker wrote:

> I have tested on the server  with the latest wireless-testing the past days 
> (2.6.28-rc9-wl). The wireless-testing looks somewhat more stable then the 
> compat-wireless. 
> 
> I have also installed the netconsole module to watch any kernel prints. After 
> running hostapd (v0.6.6) from command line the AP is up-and-running. Then if I 
> connect with the laptop (tested it with kernel .26 and .28 on the laptop) I 
> get a connection and can start a browser en explore the internet. If I start 
> a second session (Kmail or second browser) the 
> server hangs within a minute. Leaving again no trace on the console, 
> hostapd-log or netconsole.

Just to make sure I understood this correctly.. Does this happen with
just a single association station (your laptop)? What are you referring
to with a "session"? Just another program using network (i.e., no new
wireless associations, etc.)? As far as the ath9k driver is concerned,
new applications (e.g., new TCP connection) should not really matter
much.. If you have IEEE 802.11n enabled, could you please run a test
with it disabled to make sure this is not related to frame aggregation?

As far as getting any output from the system is concerned, the next step
could be to see if NMI watchdog would be able to provide any help.
Please take a look at Documentation/nmi_watchdog.txt in the kernel
source code and see if you could use that on the AP to get some output
when the system hangs (running without X on console to make sure you see
the output).

-- 
Jouni Malinen                                            PGP id EFC895FA