On 1/30/20, JH <jupiter.hce@xxxxxxxxx> wrote: > Thanks Emil and Jan, > > On 1/29/20, Ryll, Jan (GED-SDD2) <Jan.Ryll@xxxxxxxx> wrote: >> Try to increase distance from router or other WiFi device. > > Tried, but no avail. Sorry Emil, I had spoken too soon, it is connected now. Why that means, RF noise or interference from another device? >> there are WiFi routers like AVM which are implement the WiFi Stack in a >> stricter way than other routers or other WiFi chips-firmware. >> I mention this cause weh ad some issue with a cypress wifi firmware which >> leads to "sometimes" disconnect from routers. And we figured out that >> this >> was mostly the case with AVM. We are in contact with AVM in it turns out >> that the AVM router work proberly. The issues was with the cypress >> chipset >> firmware. Now we are in contact with cypress and they accepted the issue. >> So it is not always a connman problem :-) . > > That really worries me, my WiFi router is TP-Link AC1200 dual band > router, it should have no problem for my device to connect it as I > mentioned I have two devices one could connected without any issues. > that definitely won't be my WiFi chip uBlox Lily issues, if it was, > the another unit would not be possible to connect to my WiFi router in > office. > > I am not saying it is connman problem or mwifiex problem or kernel > problem, what I like is to get helps and clues from open source > communities to help me to debug and to find issues, it could be my > contributions as well if there could be potential open source bugs to > be found from my test, debug and report :-). > > Thank you. > > Kind regards, > > - jh >> >> -----Original Message----- >> From: JH <jupiter.hce@xxxxxxxxx> >> Sent: Wednesday, January 29, 2020 10:22 AM >> To: linux-wireless <linux-wireless@xxxxxxxxxxxxxxx>; connman >> <connman@xxxxxxxxxxxx> >> Subject: Strange inconsistant WiFi network behaviour >> >> 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 >> _______________________________________________ >> connman mailing list -- connman@xxxxxxxxxxxx To unsubscribe send an email >> to >> connman-leave@xxxxxxxxxxxx >> >
