libreELEC 8.2.2 rpi3 and NO wifi channel 13

**MikeKL** · December 24, 2017 at 12:36 PM

Away from home with rpi3 and Librelec 8.2.2 installed and unable to either see and connect to router with wifi channel set to 13

(not my router so no access to change channel even for short period)

I have temp connected to rpi3 in order to check and modify settings that thought would allow/enable channel 13 access on rpi3 but I still have blank "System - LibreELEC - Settings - Connections" window.

Used following method posted by chewitt but unfortuantely does not seem to work in 8.2.2?

WiFi Channel 13 not possible on RasPi 3, regional settings doesn't help

Any ideas/help greatly appreciated.

**chewitt** · December 24, 2017 at 12:43 PM Official Post

You might need to replace "DE" with the appropriate regdom for wherever you are, i.e. FR for France. Also, don't forget that RPi3 wireless has terrible range. You need to find a way to send us "dmesg" log so we can see what's happening.

**MikeKL** · December 24, 2017 at 2:00 PM

Switched from DE to FR and this is what's recorded in cfg80211.conf after reboot of rpi3

Code

options cfg80211 ieee80211_regdom=FR

dmseg.log

Thanks for your help

**chewitt** · December 25, 2017 at 12:49 PM Official Post

There's two lines that mention wlan0 but nothing related to association with a network and no errors that might give hints. Apart from taking a backup and then doing a clean install I'm not sure what to suggest.

**MikeKL** · December 26, 2017 at 11:34 AM

Yes creating a backup then trying with clean install is an idea.

Additional Notes just for information.

I moved rpi3 closer too Wifi Router but this made no improvement to visibity of specific routers 2.4ghz WiFi signal to rpi3.

Other possible weak Wifi connections in area appeared/dissappeared; but never closest router of interest/need so that why I believed its broadcasting on channel 13 to be main issue. (Checked with wifi anlysyzer app on motog phone)

I could connect rpi3 to my motog phone acting as wireless mobile hot spot (thats how I connected from another device to get dmesg log) and have/had no problems connecting to router wirelessly at home. (Actually this is when I updated rpi3 manually to 8.2.2 before travelling to visit family etc)

**chewitt** · December 27, 2017 at 6:33 AM Official Post

It's hard to comment. Apart from poor range we're not aware of any issues with the RPi3 onboard wifi .. and without some error messages to guide investigation there isn't much to go on.

**MikeKL** · December 27, 2017 at 8:05 PM

chewitt

With further testing hopefully additional useful information. Essentially I ssh'd into rpi3 when rpi3 & PC both connected to hotspot provided by motog phone. Following is image of networks visible in kodi (along with confirmation of connected to motog hotspot)

Then running connman commands in ssh and specifically "connmanctl scan wifi" which immediataly updated kodi's view of avaiable networks.

Unfortunately any attempts to complete connection to Freebox-63910C (selecting and entering phass-phrase in kodi) failed and after long wait would drop back and automatically reconnect to kodi (updated view with only motog hotspot visible again?)

Code

login as: root
root@192.168.43.82's password:
##############################################
#                  LibreELEC                 #
#            https://libreelec.tv            #
##############################################

LibreELEC (official): 8.2.2 (RPi2.arm)
LibreELEC:~ # ps faux | grep connmand
  320 root       0:00 /usr/sbin/connmand -nr --config=/etc/connman/main.conf
  608 root       0:00 grep connmand
LibreELEC:~ # ifconfig
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

wlan0     Link encap:Ethernet  HWaddr B8:27:EB:49:63:D5
          inet addr:192.168.43.82  Bcast:192.168.43.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:678 errors:0 dropped:0 overruns:0 frame:0
          TX packets:750 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:712900 (696.1 KiB)  TX bytes:98727 (96.4 KiB)

LibreELEC:~ # connmanctl scan wifi
Scan completed for wifi
LibreELEC:~ # connmanctl services
*AO Moto G (4) 1708      wifi_b827eb4963d5_4d6f746f2047202834292031373038_managed_psk
    FreeWifi_secure      wifi_b827eb4963d5_46726565576966695f736563757265_managed_ieee8021x
    Freebox-63910C       wifi_b827eb4963d5_46726565626f782d363339313043_managed_psk
    FreeWifi             wifi_b827eb4963d5_4672656557696669_managed_none
LibreELEC:~ #
LibreELEC:~ # paste /storage/.kodi/temp/kodi.log
http://sprunge.us/LKgX
LibreELEC:~ # dmesg | paste
http://sprunge.us/gFSM
LibreELEC:~ #

Display More

kodi.log and dmesg, Where I can see within kodi.log, failed attempts to connect to Freebox-6391C

(where I know I was entering wifi password correctly)

Code

ERROR: ## LibreELEC Addon ## connman::dbus_error_handler ## ERROR: (Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.)

raspi0w · December 29, 2017 at 8:03 PM

I have had the same problem with my raspberry pi zero w.

After adding country code (Sweden)

echo "options cfg80211 ieee80211_regdom=SE" > /storage/.config/modprobe.d/cfg80211.conf

I got after reboot:

LE821:~ # modprobe -D cfg80211

insmod /lib/modules/4.9.59/kernel/net/rfkill/rfkill.ko

insmod /lib/modules/4.9.59/kernel/net/wireless/cfg80211.ko ieee80211_regdom=SE

LE821:~ #

Now I am able to connect both to channels 12 and 13

I guess that you may use any eurpean contry code except "EU"

Hope this will help.

**chewitt** · December 30, 2017 at 6:09 AM Official Post

He already tried "FR" which is a valid regdom. It appears to be something else .. but debugging wireless connectivity issues requires rather specialist knowledge of radio properties and without some nice error messages to Google progress will be non-existent.

MikeKL sprunge.us is offline (and may not return) so can you repost the files to ix.io or pastebin.com?

**MikeKL** · December 30, 2017 at 8:46 AM

Sprunge.es is up atm, but as it seems to keep going offline, grabbed copies of previous files, here they are on pastebin.com

kodi.log

dmesg

Please Note: I am leaving location where I have been having problems to connect in a few hrs so will not have an opportunity to gather more information or try anything else to achieve a connection at currnet location. (So if I am only one with problem don't worry etc)

Thought I was getting somewhere with ssh, connman and wifi.config file in /storage/.cache/connman but that may have been something to do with file having incorrect parameters or similar. (did not really know what I was doing, just challenging myself to learn a little more)

Freebox-63910C.config file contents (Note Name = switched to SSID = <in hex>)

Code

[global]
Name = Freebox-63910C
Description = Freebox-63910C Wifi service config file
[service_wifi_Freebox-63910C]
Type = wifi
SSID = 46726565626f782d363339313043
Passphrase = <correct passphrase was inserted here>

*A in front of Freebox-63910C (connection I wanted to achieve) indicating connman aware of what to do, but with a connection failure result when trying to switch connection via ssh

Code

LibreELEC:~/.cache/connman # connmanctl scan wifi
Scan completed for wifi
LibreELEC:~/.cache/connman # connmanctl services
*AO Moto G (4) 1708      wifi_b827eb4963d5_4d6f746f2047202834292031373038_managed_psk
*A  Freebox-63910C       wifi_b827eb4963d5_46726565626f782d363339313043_managed_psk
    FreeWifi             wifi_b827eb4963d5_4672656557696669_managed_none
    FreeWifi_secure      wifi_b827eb4963d5_46726565576966695f736563757265_managed_ieee8021x
LibreELEC:~/.cache/connman #
LibreELEC:~/.cache/connman # connmanctl connect wifi_b827eb4963d5_46726565626f782d363339313043_managed_psk
Error /net/connman/service/wifi_b827eb4963d5_46726565626f782d363339313043_managed_psk: Operation aborted
LibreELEC:~/.cache/connman #

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raspi0w · December 30, 2017 at 1:35 PM

chewitt

cfg80211.conf must be placed in modprobe.d directory. Check my post again.

Ask him to send output from "modprobe -D cfg80211" command.

That will show if value of iee80211_regdom is correctly passed to the kernel module.

**MikeKL** · December 30, 2017 at 2:03 PM

raspi0w & chewitt , For info this current situation in modprobe.d folder etc

(not currently in situation/location where I can try again with cfg80211.conf copied to modprobe.d folder)

Code

login as: root
root@192.168.43.82's password:
##############################################
#                  LibreELEC                 #
#            https://libreelec.tv            #
##############################################

LibreELEC (official): 8.2.2 (RPi2.arm)
LibreELEC:~ # cd /storage/.config/modprobe.d/
LibreELEC:~/.config/modprobe.d # ls -al
total 3
drwxrwxr-x    2 root     root          1024 Dec 21 18:54 .
drwxr-xr-x   13 root     root          1024 Dec 16 00:37 ..
-rw-r--r--    1 root     root           616 Feb 26  2017 disable-spdif-for-hd-audio.conf
LibreELEC:~/.config/modprobe.d #
LibreELEC:~/.config/modprobe.d # modprobe -D cfg80211
insmod /lib/modules/4.9.59/kernel/net/rfkill/rfkill.ko
insmod /lib/modules/4.9.59/kernel/net/wireless/cfg80211.ko
LibreELEC:~/.config/modprobe.d #

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raspi0w · December 30, 2017 at 8:10 PM

MikeKL, chewitt

Your output shows that you are missing file cfg80211.conf in directory /storage/.config/modprobe.d/ .

The consequence is that country code is not passed to kernel and you are using US as a default country code.

US country code allows only channels 1-11.

I advise you,

ssh login in your computer

Copy and paste following line:

echo -e "options cfg80211 ieee80211_regdom=DE" > /storage/.config/modprobe.d/cfg80211.conf

then type

cat /storage/.config/modprobe.d/cfg80211.conf

the output should be: options cfg80211 ieee80211_regdom=DE

reboot your computer

type modprobe -D cfg80211

the output shoud be

insmod /lib/modules/4.9.59/kernel/net/rfkill/rfkill.ko

insmod /lib/modules/4.9.59/kernel/net/wireless/cfg80211.ko ieee80211_regdom=DE

If you are able to see ieee80211_regdom=DE in the second output line, try to connect to your router using GUI