From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wm0-f67.google.com ([74.125.82.67]:34089 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933438AbcIGHtr (ORCPT ); Wed, 7 Sep 2016 03:49:47 -0400 Received: by mail-wm0-f67.google.com with SMTP id w12so1573548wmf.1 for ; Wed, 07 Sep 2016 00:49:45 -0700 (PDT) Received: from automatix.localnet (net-93-147-4-153.cust.dsl.teletu.it. [93.147.4.153]) by smtp.gmail.com with ESMTPSA id q65sm2770791wmd.24.2016.09.07.00.49.43 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 07 Sep 2016 00:49:44 -0700 (PDT) From: Valerio Passini To: linux-wireless@vger.kernel.org Subject: Stability connection problems in ath9k kernel 4.7 Date: Wed, 07 Sep 2016 09:49:42 +0200 Message-ID: <1798564.U2X6r5Zons@automatix> (sfid-20160907_095006_868179_B7BDE5A2) MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: linux-wireless-owner@vger.kernel.org List-ID: Hello, I have found some connection problems since 4.7 release using ath9k that turn the wifi pretty useless, I think it might be something in the power management because the signal seems really low. Previously, up to kernel 4.6.7 everything worked very well. This is a sample of dmesg in kernel 4.7.2: 239.898935] wlp4s0: authenticate with XX:XX:XX:XX:XX:XX [ 239.919995] wlp4s0: send auth to XX:XX:XX:XX:XX:XX (try 1/3) [ 239.931877] wlp4s0: authenticated [ 239.932357] wlp4s0: associate with XX:XX:XX:XX:XX:XX (try 1/3) [ 239.942171] wlp4s0: RX AssocResp from XX:XX:XX:XX:XX:XX (capab=0x431 status=0 aid=2) [ 239.942301] wlp4s0: associated [ 244.802853] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x0000 6100 [ 245.931832] wlp4s0: authenticate with XX:XX:XX:XX:XX:XX [ 245.953028] wlp4s0: send auth to XX:XX:XX:XX:XX:XX (try 1/3) [ 245.958702] wlp4s0: authenticated [ 245.960386] wlp4s0: associate withXX:XX:XX:XX:XX:XX (try 1/3) [ 245.980543] wlp4s0: RX AssocResp from XX:XX:XX:XX:XX:XX (capab=0x431 status=0 aid=2) lspci on 4.6.7 kernel: 04:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01) Subsystem: AzureWave AR9485 Wireless Network Adapter Flags: bus master, fast devsel, latency 0, IRQ 18 Memory at f7900000 (64-bit, non-prefetchable) [size=512K] Expansion ROM at f7980000 [disabled] [size=64K] Capabilities: [40] Power Management version 2 Capabilities: [50] MSI: Enable- Count=1/4 Maskable+ 64bit+ Capabilities: [70] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [140] Virtual Channel Capabilities: [160] Device Serial Number 00-00-00-00-00-00-00-00 Kernel driver in use: ath9k Kernel modules: ath9k Probably you need some debugging output, but before recompiling the kernel I would like to know if you are interested in any kind of help from me and what steps I should take (I'm able to help in testing patches but I'm not familiar with git). Thank you Valerio