Return-path: Received: from mail-gy0-f174.google.com ([209.85.160.174]:36810 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751626Ab2CLFWy (ORCPT ); Mon, 12 Mar 2012 01:22:54 -0400 Received: by ghrr11 with SMTP id r11so2176182ghr.19 for ; Sun, 11 Mar 2012 22:22:54 -0700 (PDT) Message-ID: <4F5D882A.7040002@gmail.com> (sfid-20120312_062258_730618_09DB417C) Date: Sun, 11 Mar 2012 22:22:50 -0700 From: "Justin P. Mattock" MIME-Version: 1.0 To: Adrian Chadd CC: Andreas Hartmann , Oskar Stenman , linux-wireless@vger.kernel.org Subject: Re: ath9k timeouts with the current Mainline References: <4F12F5DD.3030904@gmail.com> <4F5B27DB.8090508@cetex.se> <4F5B61A7.6010904@01019freenet.de> <4F5B8932.4010101@gmail.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: On 03/10/2012 02:30 PM, Adrian Chadd wrote: > Hi, > > Please bisect the kernel to see if you can find a time where it worked. > > And try disabling ANI and see if that helps. > > ath9k seems to have a weird issue with the AR5008 series stuff > (AR5416/AR5418) with noise floor calibration + ANI == weird RX > deafness. > > FreeBSD doesn't seem to have this issue with the AR5416. I don't (yet) know why. > > Thanks, > > > Adrian > > On 10 March 2012 09:02, Justin P. Mattock wrote: >> On 03/10/2012 06:13 AM, Andreas Hartmann wrote: >>> >>> Oskar Stenman wrote: >>>> >>>> I'm having a similar or the same problem, it's been nagging me for at >>>> least 1.5years. >>>> >>>> If I'm able to connect I get frequent dropouts from any wireless network >>>> I'm connected to. It gets sluggish and after a little while disconnects, >>>> and once it has disconnected it just keeps reconnecting and failing. >>>> sometimes a reboot helps, but most of the time it wont help anymore than >>>> a couple of seconds to a minute. It's also impossible to connect to my >>>> wireless hotspot on my Xperia Mini Pro and it seems ad-hoc networks are >>>> also impossible. >>>> >>>> I'm running ubuntu 11.10 with latest patches applied as of today. Since >>>> i've not seen anything being solved during this time i doubt anyone has >>>> been trying to, or has been able to solve the problem recently. >>> >>> >>> I'm running exactly the same chip (according lspci) without any problem. >>> But I'm using slightly different environment: >>> >>> 1. 64 bit >>> 2. kernel 3.1 (some time ago, I run 3.0, too, but cannot remember >>> having any problems related ar9285). >>> 3. no network manager - just plain wpa_supplicant. >>> 4. wpa_supplicant 0.7.3 >>> >>> >>> If you like to, you could just check, if the problem is network manager >>> related. Try to stop it and run wpa_supplicant manually as root like >>> this (ensure, that no other wpa_supplicant process is running at the >>> same time): >>> >>> wpa_supplicant -t -c /etc/wpa_supplicant/wpa_supplicant.conf -Dnl80211 >>> -i wlan0 >>> >>> -c is the config file. -i is the device name. >>> >>> sample config file for WPA2 PSK would be: >>> >>> network={ >>> ssid="your network name" >>> # scan_ssid=1 >>> key_mgmt=WPA-PSK >>> psk="your psk" >>> proto=WPA2 >>> } >>> >>> If you see a line like this: >>> WPA: Key negotiation completed with xx:xx:xx:xx:xx:xx [PTK=CCMP GTK=CCMP] >>> you can go to another terminal and start dhclient or dhcpcd like this: >>> >>> dhcpcd wlan0 (or whatever your device name is) >>> >>> >>> If this is all running fine, you most probably face a network manager >>> problem. >>> >>> >>> Hope that helps, >>> regards, >>> Andreas >>> >> >> >> The timeouts I have not see just yet; only the RX DMA thing which I am >> monitoring and trying to recreate, so I can _possibly_ bisect. as for the >> timeout(s) I have not see this with the current, there is a bug report on >> this(2.6.37 or so) but I think the bug was closed due to no participation or >> something. >> >> also make sure you have power save off(iwconfig wlan* power off) because >> from what I remember powersave on is what triggers the timeout(s) >> >> >> Justin P. Mattock >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > please no top-posting! Anyway a bisect is easy just would like a way to recreate this?(so that I am not wasting my precious time) does anybody know how to do this? any kind of C code to trigger this? any tweaking with NM etc.. to trigger this? reading through http://www.mail-archive.com/ath9k-devel@lists.ath9k.org/msg05051.html hostapd was able to trigger this for one, but over here still no luck. If no re-creation is possible I suppose the bisect might take a few weeks(since I seem to be hitting this once a week),but then again I could be wrong. Justin P. Mattock