linux-kernel - Re: iwlagn: associating with AP causes kernel hiccup

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Date:	Fri, 17 Oct 2008 22:02:01 +0200
From:	"Tomas Winkler" <tomasw@...il.com>
To:	"Richard Scherping" <richard@...erping.de>
Cc:	"Frederik Himpe" <fhimpe@...enet.be>,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: iwlagn: associating with AP causes kernel hiccup

On Fri, Oct 17, 2008 at 5:27 PM, Richard Scherping <richard@...erping.de> wrote:
>>>>> When I associate with an AP, Linux 2.6.27 seems to "hang" for a few
>>>>> seconds. During that time, all sound stops playing and keyboard and
>>>>> mouse input is impossible.
>>>
>>> I'm using Mandriva 2009.0 x86_64 with wpa_supplicant and Mandriva's
>>> wireless network configuration tool (drakroam).
>>>
>>> Actually I just found out that running # ifconfig wlan0 down
>>> is enough to trigger the sound and mouse hanging for a few seconds.
>>
>> And shortly after I wrote that, while associating while getting an IP
>> with dhclient when associating with a WPA encrypted AP, I got this
>> backtrace in my logs:
>> [...]
>
> I have a similar problem here. No crash up to now, but the very same "hang" for a few seconds on "ifconfig wlan0 down". Interestingly this does only happen after a normal boot - once I did a suspend and resume (S3), there is no hang anymore.
>
> Hardware: Thinkpad T61p with Intel 4965 agn
> Software: Debian Lenny x86_64 with vanilla 2.6.27 kernel
>
Driver in 2.6.27 is not stable, please try to reproduce this in
current wireless-testing.git.
Thanks
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