Return-path: Received: from mail-iy0-f174.google.com ([209.85.210.174]:57656 "EHLO mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750810Ab1KDA4l convert rfc822-to-8bit (ORCPT ); Thu, 3 Nov 2011 20:56:41 -0400 MIME-Version: 1.0 In-Reply-To: <1320204101.31823.140.camel@wwguy-huron> References: <1319003304.31823.46.camel@wwguy-huron> <20111019064628.GA14817@gamma.logic.tuwien.ac.at> <1319004836.31823.57.camel@wwguy-huron> <20111020045927.GB23044@gamma.logic.tuwien.ac.at> <1319119852.2111.2.camel@wwguy-ubuntu> <20111021012442.GB26758@gamma.logic.tuwien.ac.at> <20111026025014.GB24956@gamma.logic.tuwien.ac.at> <1319601333.14693.19.camel@wwguy-ubuntu> <20111026040332.GF24956@gamma.logic.tuwien.ac.at> <20111102031345.GA10851@gamma.logic.tuwien.ac.at> <1320204101.31823.140.camel@wwguy-huron> Date: Thu, 3 Nov 2011 20:56:40 -0400 Message-ID: (sfid-20111104_015657_978018_47BA5A78) Subject: Re: iwlagn is getting very shaky From: Richard Yao To: "Guy, Wey-Yi" Cc: Norbert Preining , David Rientjes , "linux-kernel@vger.kernel.org" , "ipw3945-devel@lists.sourceforge.net" , "ilw@linux.intel.com" , "linux-wireless@vger.kernel.org" , Pekka Enberg Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: Dear Wey, My situation is very similar to Norbert's. At my house, I have no issues at all, but at my university, I tend to have issues. In the past, using 11n_disable=1 would cause the wireless interface to break until I executed "modprobe -r iwlagn && modprobe iwlagn" as root. That was around Linux 3.0-rc4. I haven't tried it since, but what seems to help is "iwconfig wlan0 rts 0", but even that is not perfect. I just gave "modprobe -r iwlagn && modprobe iwlagn 11n_disable=1" another try and it makes no difference. Issues with the campus Wi-Fi are not isolated to Linux users. I suspect it has something to do with the 100 or so access points that I see when I do "iwlist wlan0 scan" at my university and the 4 that I see when I do that off campus. I don't want to imagine how many devices are trying to use the available bandwidth. I imagine that implementing "auto" for rts would improve both my and Norbert's situations. Yours truly, Richard Yao On Tue, Nov 1, 2011 at 11:21 PM, Guy, Wey-Yi wrote: > Hi Norbert, > > On Tue, 2011-11-01 at 20:13 -0700, Norbert Preining wrote: >> Hi all, >> >> On Mi, 26 Okt 2011, Norbert Preining wrote: >> > On Di, 25 Okt 2011, wwguy wrote: >> > > so this is different problem, right? it looks different compare to what >> > > you described before which is cause by queue stopped. >> > >> > I assume that this is a different regression concerning 3.1.0 released. >> >> Is there any progress on that? Currently linux git status is unusable >> with respect to iwlwifi? >> >> Are there any changes planned before rc1? >> > after the firmware reloaded, is the traffic resume? or it is continuous > without traffic? > > Looks like the different "queue stuck" problem you are seeing. you > mention you only seeing this at university but not home. So what the > differences are? > what Band/channel you are using, also, if you disable 11n, are you still > seeing the problem? > > you also mention it is might related to suspend/resume, could you please > give a better description why you think it might be related > > Thanks > Wey > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at ?http://vger.kernel.org/majordomo-info.html > Please read the FAQ at ?http://www.tux.org/lkml/ >