From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68212C33CB2 for ; Wed, 29 Jan 2020 10:09:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 421D92071E for ; Wed, 29 Jan 2020 10:09:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726069AbgA2KJz (ORCPT ); Wed, 29 Jan 2020 05:09:55 -0500 Received: from bsmtp3.bon.at ([213.33.87.17]:6889 "EHLO bsmtp3.bon.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726010AbgA2KJz (ORCPT ); Wed, 29 Jan 2020 05:09:55 -0500 X-Greylist: delayed 2545 seconds by postgrey-1.27 at vger.kernel.org; Wed, 29 Jan 2020 05:09:54 EST Received: from bsmtp2.bon.at (unknown [192.168.181.102]) by bsmtp3.bon.at (Postfix) with ESMTPS id 486ynF4Q2Sz5tyv for ; Wed, 29 Jan 2020 10:27:29 +0100 (CET) Received: from [192.168.100.138] (unknown [188.20.71.254]) by bsmtp2.bon.at (Postfix) with ESMTPSA id 486ynD1lBfz5tl9; Wed, 29 Jan 2020 10:27:27 +0100 (CET) Subject: Re: Strange inconsistant WiFi network behaviour To: JH , linux-wireless , connman References: From: Emil Petersky Message-ID: <5E314FFF.8040602@streamunlimited.com> Date: Wed, 29 Jan 2020 10:27:27 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Try to increase distance from router or other WiFi device. Best regards, Emil On 29.01.2020 10:21, JH wrote: > Hi, > > I have 2 iMX6 devices running uBlox Lily WiFi, mrvl firmware > sd8801_uapsta.bin in kernel 4.19.75. In my office, a WiFi router is > just 1 meter away, the WiFi signal should not be a problem. One device > could connect to the WiFi router well and stably, one could not, here > were error messages: > > [ 408.990029] ieee80211 phy0: mwifiex_cfg80211_sched_scan_start : > Invalid Sched_scan parameters > ..................... > > [56.986414] ieee80211 phy0: mwifiex_cfg80211_sched_scan_start : > Invalid Sched_scan parameter > > connmand[13469]: > ../connman-1.35/src/service.c:preferred_tech_add_by_type() type 5 > service 0x119120 Telstra > connmand[13469]: ../connman-1.35/src/service.c:auto_connect_service() > preferred 1 sessions 0 reason auto > connmand[13469]: ../connman-1.35/src/ntp.c:send_timeout() send timeout > 2 (retries 0) > connmand[13469]: > ../connman-1.35/plugins/ofono.c:netreg_update_strength() /ubloxqmi_2 > Strength 80 > connmand[13469]: ../connman-1.35/src/ntp.c:send_timeout() send timeout > 4 (retries 1) > connmand[13469]: ../connman-1.35/plugins/wifi.c:throw_wifi_scan() > device 0x118da8 0x116c78 > connmand[13469]: > ../connman-1.35/src/device.c:connman_device_ref_debug() 0x118da8 ref 4 > by ../connman-1.35/plugins/wifi.c:1214:throw_wifi_scan() > connmand[13469]: > ../connman-1.35/src/device.c:connman_device_set_scanning() device > 0x118da8 scanning 1 > connmand[13469]: > ../connman-1.35/src/technology.c:__connman_technology_scan_started() > device 0x118da8 > connmand[13469]: ../connman-1.35/plugins/wifi.c:autoscan_timeout() interval 27 > connmand[13469]: ../connman-1.35/plugins/wifi.c:interface_state() wifi > 0x11a7c8 interface state 4 > connmand[13469]: ../connman-1.35/plugins/wifi.c:scan_started() > connmand[13469]: ../connman-1.35/src/rtnl.c:rtnl_message() NEWLINK len > 56 type 16 flags 0x0000 seq 0 pid 0 > connmand[13469]: ../connman-1.35/plugins/wifi.c:scan_finished() > connmand[13469]: ../connman-1.35/plugins/wifi.c:interface_state() wifi > 0x11a7c8 interface state 3 > > Both devices were installed the same firmware and software, if it was > firmware / software issues, both would not be able to connect to WiFi, > as one device could connect to the office WiFi router well, it could > not the WiFi router problem either. > > If I move the faulty one to my home, it could connect to my home WiFi, > so the device does not have WiFi problem, that is really confusing, > what could cause that kind problem and how to debug and fix it? > > Thank you. > > Kind regards, > > - jh >