Return-path: Received: from mail-ob0-f173.google.com ([209.85.214.173]:57293 "EHLO mail-ob0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757133Ab3EDP7I (ORCPT ); Sat, 4 May 2013 11:59:08 -0400 Received: by mail-ob0-f173.google.com with SMTP id 6so2129085oba.4 for ; Sat, 04 May 2013 08:59:08 -0700 (PDT) MIME-Version: 1.0 Date: Sat, 4 May 2013 17:59:08 +0200 Message-ID: (sfid-20130504_175913_537293_ED2CC586) Subject: ath: phy0: Failed to stop TX DMA From: Sergei Antonov To: linux-wireless@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hello! The following messages appear in my console approx. once in a minute. Please, help me to fix that. kernel: cfg80211: Calling CRDA to update world regulatory domain kernel: ath: phy0: Failed to stop TX DMA, queues=0x001! kernel: wlp3s6: authenticate with 00:15:af:xx:xx:xx kernel: wlp3s6: send auth to 00:15:af:xx:xx:xx (try 1/3) kernel: wlp3s6: authenticated kernel: ath9k 0000:03:06.0 wlp3s6: disabling HT as WMM/QoS is not supported by the AP kernel: ath9k 0000:03:06.0 wlp3s6: disabling VHT as WMM/QoS is not supported by the AP kernel: wlp3s6: associate with 00:15:af:xx:xx:xx (try 1/3) kernel: wlp3s6: RX AssocResp from 00:15:af:xx:xx:xx (capab=0x411 status=0 aid=3) kernel: wlp3s6: associated I use "Atheros Communications Inc. AR5008 Wireless Network Adapter (rev 01)" PCI card on linux-3.8.8 x86_64. The connection to WPA access point works, although SSH freezes periodically for a couple of seconds. The first message comes from net/wireless/reg.c , the second from drivers/net/wireless/ath/ath9k/xmit.c and is output via ath_err(). Looks like something is wrong with my system. I need assistance to resolve it.