Return-path: Received: from moutng.kundenserver.de ([212.227.126.186]:49749 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750838AbYJRQRj (ORCPT ); Sat, 18 Oct 2008 12:17:39 -0400 Message-ID: <48FA0C27.8010301@scherping.de> (sfid-20081018_181743_786288_D6BDB802) Date: Sat, 18 Oct 2008 18:17:43 +0200 From: Richard Scherping MIME-Version: 1.0 To: Tomas Winkler CC: Frederik Himpe , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: iwlagn: associating with AP causes kernel hiccup References: <1224104363.19219.30.camel@rc-desk> <48F8AEF1.5030603@scherping.de> <1ba2fa240810171302h7dcc92acr18c060425c4a93d@mail.gmail.com> In-Reply-To: <1ba2fa240810171302h7dcc92acr18c060425c4a93d@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: Tomas Winkler schrieb: > On Fri, Oct 17, 2008 at 5:27 PM, Richard Scherping 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. I do not have the time to compile and test wireless-testing ATM, sorry. In fact I am annoyed by the fact that iwlagn is "known to be unstable" in a stable kernel release and that this even seems to be a totally normal thing... Once compat-wireless is working again on my system I will try that and check whether the hang still occurs. Current compat-wireless does not for me - compilation says make[1]: Entering directory `/usr/src/linux-2.6.27' /home/richard/Desktop/compat-wireless-2008-10-17/config.mk:44: "WARNING: You are running a kernel >= 2.6.23, you should enable in it CONFIG_NETDEVICES_MULTIQUEUE for 802.11[ne] support" and I did not find CONFIG_NETDEVICES_MULTIQUEUE using menuconfig. Loading the modules fails with tons of unknown symbols and disagreed versions (already at cfg80211 and mac80211 modules). Perhaps I should go back to Debian stock 2.6.26 kernel - but there Ad-Hoc is broken on iwl4965, although it was working without problems earlier in 2.6.24. Richard