Random WiFi problems

Pi MusicBox
1

I am noticing random WiFi connection problem at boot, so I am trying to troubleshoot.

Of course, I checked correctness of my wifi settings and routing.

In startput.sh you are resetting the network with /etc/init.d/networking restart but Debian reports that this is deprecated because it may not enable again some interfaces. Don’t you believe that it could be changed with: ifdown wlan0 && ifup wlan0 ?

2

I have replaced /etc/init.d/networking restartwith ifdown wlan0 && ifup wlan0 and now the startup log is cleaner:

************************

Initializing MusicBox...

************************

Setting sound configuration...

Probing sound devices:

card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]

card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]

* Found internal device: card0

* Found internal device: card0

Selected card= (i2s= output=auto usb= intc=0)

No output was specified/found, falling back to auto detection

Selected card=0 (i2s= output=analog usb= intc=0)

Using audio card0 (analog)

MusicBox name is MusicBox

ifup: interface wlan0 already configured

Stopping Samba daemons: nmbd smbd.

Starting Samba daemons: nmbd smbd.

Starting Dropbear SSH server: dropbear.

Starting daemon monitor: monit.

***********************************************************************************

My IP address is 192.168.1.58

Connect to me in your browser at http://MusicBox.local or http://192.168.1.58
3

Still having random disconnection from the wifi network, while playing. This is an extract from dmesg:

[17685.320174] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[17686.326142] brcmfmac: power management disabled
[17686.327917] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[17812.324712] brcmfmac: power management disabled
[17825.024314] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[26569.725423] brcmfmac: power management disabled
[26569.747750] brcmfmac: power management disabled
[26569.749504] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[26570.755510] brcmfmac: power management disabled
[26570.757280] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[26811.587885] brcmfmac: power management disabled
[26853.156157] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[27995.915851] brcmfmac: power management disabled
[27995.938058] brcmfmac: power management disabled
[27995.940219] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[27996.946099] brcmfmac: power management disabled
[27996.947226] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[28011.994326] brcmfmac: power management disabled
[28013.040592] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

Any idea?

4

…it is still happening frequently…

[Sun Feb 10 00:45:38 2019] brcmfmac: power management disabled
[Sun Feb 10 00:45:38 2019] brcmfmac: power management disabled
[Sun Feb 10 00:45:38 2019] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[Sun Feb 10 00:45:39 2019] brcmfmac: power management disabled
[Sun Feb 10 00:45:39 2019] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[Sun Feb 10 00:48:05 2019] brcmfmac: power management disabled
[Sun Feb 10 00:48:06 2019] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[Sun Feb 10 01:00:13 2019] brcmfmac: power management disabled
[Sun Feb 10 01:00:13 2019] brcmfmac: power management disabled
[Sun Feb 10 01:00:13 2019] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[Sun Feb 10 01:00:18 2019] brcmfmac: power management disabled
[Sun Feb 10 01:00:19 2019] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[Sun Feb 10 01:01:15 2019] brcmfmac: power management disabled
[Sun Feb 10 01:01:15 2019] brcmfmac: power management disabled
[Sun Feb 10 01:01:15 2019] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[Sun Feb 10 01:01:16 2019] brcmfmac: power management disabled
[Sun Feb 10 01:01:16 2019] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[Sun Feb 10 01:03:05 2019] brcmfmac: power management disabled
[Sun Feb 10 01:03:06 2019] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[Sun Feb 10 01:16:56 2019] brcmfmac: power management disabled
[Sun Feb 10 01:16:56 2019] brcmfmac: power management disabled
[Sun Feb 10 01:16:56 2019] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[Sun Feb 10 01:16:57 2019] brcmfmac: power management disabled
[Sun Feb 10 01:16:57 2019] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[Sun Feb 10 01:18:05 2019] brcmfmac: power management disabled
[Sun Feb 10 01:18:06 2019] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
5

This is my interfaces file:

root@MusicBox:/var/log/mopidy# cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

#auto eth0
allow-hotplug eth0
iface eth0 inet dhcp

auto wlan0
allow-hotplug wlan0

#iface wlan0 inet manual
#wpa-roam /etc/wpa.conf

#for static ip on wifi, comment out the two lines above (iface and wpa-roam), uncomment the following lines and change the ip numbers to the correct values

iface wlan0 inet static
wpa-conf /etc/wpa.conf
address 192.168.1.58
netmask 255.255.255.0
gateway 192.168.1.1

wireless-power off


iface default inet dhcp
6

Are you saying those log events directly correlate with your wireless problems or are you just posting that log file in case it’s relevant?

7

I suppose for both reasons…

8

OK so specifically at those times it lost connection. Are you using wireless channel 12 or 13?

9

No, channel 11 (40Mhz bandwidth)

(some more word)