rpi3 wifi problem

[asan nased]

hello, i have a problem with wifi, it does not work.

ifconfig wlan0

wlan0 Link encap:Ethernet HWaddr B8:27:EB:4B:4E:24
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:130 errors:0 dropped:130 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:61664 (60.2 KiB) TX bytes:0 (0.0 B)

grep wlan /var/log/messages

Jan 1 01:00:04 RECALBOX daemon.info connmand[233]: wlan0 {create} index 3 type 1 <ETHER>
Jan 1 01:00:04 RECALBOX daemon.info connmand[233]: wlan0 {update} flags 4098 <DOWN>
Jan 1 01:00:04 RECALBOX daemon.info connmand[233]: wlan0 {newlink} index 3 address B8:27:EB:4B:4E:24 mtu 1500
Jan 1 01:00:04 RECALBOX daemon.info connmand[233]: wlan0 {newlink} index 3 operstate 2 <DOWN>
Jan 1 01:00:04 RECALBOX daemon.info connmand[233]: Adding interface wlan0 [ wifi ]
Jan 1 01:00:18 RECALBOX user.err kernel: [ 19.964400] brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists
Jan 1 01:00:18 RECALBOX daemon.info connmand[233]: wlan0 {update} flags 36931 <UP,RUNNING>
Jan 1 01:00:18 RECALBOX daemon.info connmand[233]: wlan0 {newlink} index 3 address B8:27:EB:4B:4E:24 mtu 1500
Jan 1 01:00:18 RECALBOX daemon.info connmand[233]: wlan0 {newlink} index 3 operstate 0 <UNKNOWN>
Jan 1 01:00:18 RECALBOX daemon.info connmand[233]: wlan0 {update} flags 36867 <UP>
Jan 1 01:00:18 RECALBOX daemon.info connmand[233]: wlan0 {newlink} index 3 address B8:27:EB:4B:4E:24 mtu 1500
Jan 1 01:00:18 RECALBOX daemon.info connmand[233]: wlan0 {newlink} index 3 operstate 2 <DOWN>
Jan 1 01:00:18 RECALBOX daemon.info connmand[233]: wlan0 {newlink} index 3 address B8:27:EB:4B:4E:24 mtu 1500
Jan 1 01:00:18 RECALBOX daemon.info connmand[233]: wlan0 {newlink} index 3 operstate 2 <DOWN>
Jan 1 01:00:18 RECALBOX user.info kernel: [ 19.968763] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

dmesg |grep wlan

[ 19.964400] brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists
[ 19.968763] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

uname -a

Linux RECALBOX 4.4.13-v7 #1 SMP Sat Dec 2 12:59:51 UTC 2017 armv7l GNU/Linux

ifdown wlan0

ifdown: interface wlan0 not configured

ifup wlan0

ifup: ignoring unknown interface wlan0

[OyyoDams]

@asan-nased Hi,

You can't use ifup/ifdown, we use connman to manage wifi.

Anyway please check that:

• your SSID is not hidden
• your wifi channel is < 11

[asan nased]

thanks, SSID is not hidden, channel was 13, i changed it to 9 and restarted router and rpi, but it does not help, wifi does not connect

[OyyoDams]

@asan-nased ok can you temporary connect an ethernet cable to the rpi ? Then connect to its IP with a web browser, go the support section, launch the support script, and paste the link here.

[asan nased]

Download URL: https://file.ac/GUQ1gzPxi_M/

[OyyoDams]

@asan-nased all seems to be ok.

Any special character in your wifi password ? (no need to write it here)

[asan nased]

no, only numbers

[OyyoDams]

@asan-nased I don't know... No mac filter on your box ?

[asan nased]

There are no filters. I do not see any attempts to establish connection at the router log files. I tested wifi with 2016-05-27-raspbian-jessie.img and it works, than i rewrited recalbox.img at SD card and configured wifi again and i still have this problem.

[asan nased]

I do not understand why RX packets at WLAN0 interface dropped

ifconfig wlan0|grep RX

      RX packets:143 errors:0 dropped:143 overruns:0 frame:0
      RX bytes:66349 (64.7 KiB)  TX bytes:0 (0.0 B)

[Cheddar]

@oyyodams said in rpi3 wifi problem:

@asan-nased all seems to be ok.

Any special character in your wifi password ? (no need to write it here)

I have failed to connect to a Wifi with the SSID "GVT-25F0" but then succeded when routing from my phone (SSID: Cheese). If I were to guess, the issue is the "-".
Dont know if that helps but I think special characters are a problem on the name aswell.
Maybe try renaming the network?

[asan nased]

I installed a new test router with OpenWrt, created SSID ABCAAA with kea AAAAAAAA and the rpi is still not connect to wifi, RX packets still drop.

[asan nased]

When i try to start wifi via recalbox-config.sh script i get this error

pwd

/recalbox/scripts

./recalbox-config.sh wifi disable

Disabled wifi

./recalbox-config.sh wifi enable ABCAAA AAAAAAAA

Enabled wifi
Error /net/connman/technology/wifi: No carrier

[OyyoDams]

@asan-nased you can't be connected to ethernet and wifi at the same time. Unplug your ethernet cable first.

[asan nased]

Thanks, all is working now, i think the problem was in 11 channel on the router and then connected ethernet