Return-path: Received: from mail-wy0-f174.google.com ([74.125.82.174]:45546 "EHLO mail-wy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751479Ab0JBGS3 convert rfc822-to-8bit (ORCPT ); Sat, 2 Oct 2010 02:18:29 -0400 Received: by wyb28 with SMTP id 28so3602000wyb.19 for ; Fri, 01 Oct 2010 23:18:28 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: <201010020452.24306.chunkeey@googlemail.com> <201010020519.29042.chunkeey@googlemail.com> From: Saqeb Akhter Date: Sat, 2 Oct 2010 02:18:07 -0400 Message-ID: Subject: Re: carl9170: wnda3100 only 54MB/s To: linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: I guess you were right about it being unstable - almost unusable for video streaming. sakhter@sakhter-laptop:~$ dmesg | grep Reason [ 1166.512087] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) [ 1526.059997] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) [ 2125.324356] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) [ 2845.783011] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) [ 3565.994832] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) [ 5128.903576] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) [ 5726.046230] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) [ 6326.042938] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) [ 6835.689445] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) [ 7197.337060] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) Seems to disconnect quite frequently. Even tried uninstalling networkmanager. On Fri, Oct 1, 2010 at 11:28 PM, Saqeb Akhter wrote: > Yeah, doesn't look like its NetworkManager from what I can tell. I > don't notice any scanning going on, etc. > > Thanks for all the help. I guess the code for the channel changes just > isn't fast enough ? > > This is what I get in dmesg: > > [ ?174.026110] wlan1: associated > [ ?207.799194] wlan1: deauthenticated from 30:46:9a:10:49:f7 (Reason: 7) > [ ?208.065258] cfg80211: All devices are disconnected, going to > restore regulatory settings > [ ?208.065265] cfg80211: Restoring regulatory settings > [ ?208.065269] cfg80211: Calling CRDA to update world regulatory domain > [ ?208.070474] cfg80211: World regulatory domain updated: > [ ?208.070478] ? ? (start_freq - end_freq @ bandwidth), > (max_antenna_gain, max_eirp) > [ ?208.070482] ? ? (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) > [ ?208.070486] ? ? (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) > [ ?208.070489] ? ? (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) > [ ?208.070492] ? ? (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) > [ ?208.070495] ? ? (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) > [ ?213.390525] wlan1: authenticate with 30:46:9a:10:49:f7 (try 1) > > > > > > On Fri, Oct 1, 2010 at 11:19 PM, Christian Lamparter > wrote: >> On Saturday 02 October 2010 04:56:35 Saqeb Akhter wrote: >>> Nope I already noticed that 1.8.8.3 was available so to that step, I >>> am getting frequent disconnects though, it might have to do with >>> NetworkManager doing background scanning so going to try and it it to >>> stop doing that. >> Channel changes (especially with HT) are more expensive with AR9170 >> than AR9271 which features "fastcc" (fast channel change). >> >>> The NetGear driver on windows seems to ignore the WMM requirement >>> looks like. >> You can actually peek into the Windows' driver logic. >> The code is available under drivers/staging/otus/(80211core) >> AFAIK, it only checks if the HT IEs are all present. >> >>> Either way that's what the problem was, going to see if i >>> can get this disconnect problem sorted out. >> I thought "the new" NetworkManager is more intelligent and >> doesn't schedule scans while the device is actively >> transmitting/receiving data. Anyway, NetworkManager is >> "just" a manager for wpa_supplicant and wpa_supp works >> well enough. >> >> bye. >> >> >