Wifi disappeared

[fabben]

Hi!

The same day it was released, I bought a Raspberry Pi 3, connected it to a touch screen and installed Raspbian (the light version, without graphical stuff). I followed the guides and got quickly the wifi to work on the machine. I had the unit on all around the clock as a service portal in my apartment.

After some weeks it suddenly happened that it loosed its internet connection. I rebooted, and then it was fine again.

But for some days ago it cannot connect to internet at all.

If I do "iwlist wlan0 scan", if finds my wifi, and all my neighbors wifis. (Sometime my wifi is not in the list, but then I run the command 1 or 2 times and it is there again).

I have tried to reboot it a lot of times.

I have tried to "ifconfig wlan0 down; ifconfig wlan0 up" a lot of times.

I have tried to move the unit closer to my wifi router.

I have tried to change the wifi channel on my router (from channel 1 to 2 to 3 to 13, to 8). The "iwlist" command finds the network on the new channel, but it fails to create a network. Sometimes I get a "169.254"-network (link local) when I run "ifconfig" or "ip addr".

I have no problem to connect by wifi by other units, i.e. my mobile phone.

I have not changed the /etc/wpa_supplicant/wpa_supplicant.conf or /etc/network/interfaces (and they have the right contents) and I have not changed the vpa/vpa2 key on the router (I have a lot of units at home that uses it without problem).

I have checked the log files without finding any errors or clues. And the disk is not full.

So, dear friends, any ideas how I can trouble shooting this further? Maybe a hardware problem? (but... as I said, it CAN se the network)...

[DougieLawson]

sudo apt-get update && sudo apt-get upgrade should get a new kernel installed that has better support for the RPi3B WiFi.

[fabben]

I still have big problem with the wifi. After connecting with cable I upgraded and suddenly it worked fine for a while. But then the problem returned. Now I cannot connect at all. While scanning it found my networks (often, not always), but somehow it refuse to connect.

I get this error in the log:
wpa_supplicant(380): wlan0: CTRL-EVENT-ASSOC-REJECT status_code=16
wpa_supplicant(380): wlan0: Trying to associate with SSID 'my network'

And after some of that I get:

wpa_supplicant(380): wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=1 ssid="my_network" auth_failures=2 duration=20 reason=CONN_FAILED

I have been spending days with trying dozens of variants of the supplicant file, and tried to change the wifi channel on my router, but nothing seems to help.

My wpa_supplicant.conf is mostly at the default configiuration, like:

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=SE

network={
ssid="my_network"
psk="my key"
}

(with tabs, not spaces).

[Cancelor]

Lots of help on the internet is now out of date and will get you to edit /etc/network/interfaces
This is wrong, it should be left untouched .. on mine it looks like this (just in case you have changed it

Code: Select all

# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet manual

allow-hotplug wlan0
iface wlan0 inet manual
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

allow-hotplug wlan1
iface wlan1 inet manual
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

My /etc/wpa_supplicant/wpa_supplicant.conf file has another line and ends with

Code: Select all

 scan_ssid=1

network={
        ssid="xxxxxxxx"
        psk="ppppppp"
        key_mgmt=WPA-PSK
}

Are you booting to the desk top?

[fabben]

Thanks for trying to help me!

I'm not booting to desktop. I'm running this on a 2 GB memory card with the light version av Raspbian. It's installed without the gui, but then I've added the X-server and a light web browser. (So: Yes, I can run X programs, but I've not the standard menus).

I did small modifications to the configurations to match your (adding "scan_ssid=1" was most important I think), and booted. It still not works, but the syslog looked a bit different. Here some output:

root@raspberrypi:~# cat /var/log/syslog|grep 18:58|grep wlan0
May 7 18:58:18 raspberrypi avahi-daemon[411]: Leaving mDNS multicast group on interface wlan0.IPv6 with address fe80::ed4c:fa52:3c8:3f2.
May 7 18:58:23 raspberrypi systemd[1]: Starting ifup for wlan0...
May 7 18:58:23 raspberrypi systemd[1]: Started ifup for wlan0.
May 7 18:58:23 raspberrypi ifup[387]: Failed to bring up wlan0.
May 7 18:58:23 raspberrypi dhcpcd[404]: wlan0: adding address fe80::ed4c:fa52:3c8:3f2
May 7 18:58:23 raspberrypi avahi-daemon[410]: Joining mDNS multicast group on interface wlan0.IPv6 with address fe80::ed4c:fa52:3c8:3f2.
May 7 18:58:23 raspberrypi avahi-daemon[410]: New relevant interface wlan0.IPv6 for mDNS.
May 7 18:58:23 raspberrypi avahi-daemon[410]: Registering new address record for fe80::ed4c:fa52:3c8:3f2 on wlan0.*.
May 7 18:58:23 raspberrypi dhcpcd[404]: wlan0: waiting for carrier
May 7 18:58:23 raspberrypi kernel: [ 9.472489] brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists
May 7 18:58:23 raspberrypi kernel: [ 9.477233] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
root@raspberrypi:~#
root@raspberrypi:~# cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet manual

allow-hotplug wlan0
iface wlan0 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

allow-hotplug wlan1
iface wlan1 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

#wireless-power off
root@raspberrypi:~#
root@raspberrypi:~# cat /etc/wpa_supplicant/wpa_supplicant.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=SE

#network={
# ssid="my-other-network"
# psk="my-other-key"
# key_mgmt=WPA-PSK
# pairwise=CCMP
# group=CCMP
#}
scan_ssid=1

network={
ssid="my-network"
psk="my-key"
# proto=RSN
key_mgmt=WPA-PSK
# pairwise=CCMP
# auth_alg=OPEN
}
root@raspberrypi:~#
root@raspberrypi:~#

[Rive]

When was the last time you power cycled your modem & router?

[fabben]

I rebooted my fiber converter and my switch just some week ago. (I also got the firmware upgraded on it then). The problem was both before and after that. I have 10 other wifi units using the same wifi without problem (3 Chromecasts, withing scale, 2 laptops, 2 tablet computers and 2 mobile phones).

Some week ago I also bought an network extender, and created another wifi network and it works fine to connect to this with my other units, not with the pi.

[fabben]

(And this switch has the dhcp and the wifi).

[fabben]

The errors was due to the line "scan_ssid=1" was not recognized by thw wpa_supplicant:

May 7 22:04:09 raspberrypi systemd[1]: Starting ifup for wlan0...
May 7 22:04:09 raspberrypi systemd[1]: Started ifup for wlan0.
May 7 22:04:09 raspberrypi wpa_supplicant[396]: Successfully initialized wpa_supplicant
May 7 22:04:09 raspberrypi wpa_supplicant[396]: Line 12: unknown global field 'scan_ssid=1'.
May 7 22:04:09 raspberrypi wpa_supplicant[396]: Line 12: Invalid configuration line 'scan_ssid=1'.
May 7 22:04:09 raspberrypi wpa_supplicant[396]: Failed to read or parse configuration '/etc/wpa_supplicant/wpa_supplicant.conf'.
May 7 22:04:09 raspberrypi ifup[386]: /etc/network/if-pre-up.d/wpasupplicant: 120: /etc/network/if-pre-up.d/wpasupplicant: cannot create /dev/stderr: No such device or address
May 7 22:04:09 raspberrypi ifup[386]: run-parts: /etc/network/if-pre-up.d/wpasupplicant exited with return code 1
May 7 22:04:09 raspberrypi ifup[386]: Failed to bring up wlan0.

After removing the "scan_ssid=1" line I'm back with the original error:

May 7 22:14:30 raspberrypi kernel: [ 9.137376] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
May 7 22:14:30 raspberrypi kernel: [ 9.137423] brcmfmac: power management disabled
May 7 22:14:30 raspberrypi kernel: [ 9.651378] uart-pl011 3f201000.uart: no DMA platform data
May 7 22:14:30 raspberrypi kernel: [ 10.263480] Adding 102396k swap on /var/swap. Priority:-1 extents:3 across:184320k SSFS
May 7 22:14:30 raspberrypi kernel: [ 10.741373] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
May 7 22:14:30 raspberrypi kernel: [ 10.741602] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
May 7 22:14:31 raspberrypi polkitd[543]: started daemon version 0.105 using authority implementation `local' version `0.105'
May 7 22:14:31 raspberrypi dbus[419]: [system] Successfully activated service 'org.freedesktop.PolicyKit1'
May 7 22:14:31 raspberrypi systemd[1]: Started Authenticate and Authorize Users to Run Privileged Tasks.
May 7 22:14:31 raspberrypi systemd[1]: Started Modem Manager.
May 7 22:14:31 raspberrypi wpa_supplicant[405]: wlan0: Trying to associate with SSID 'My-network'
May 7 22:14:31 raspberrypi avahi-daemon[417]: Server startup complete. Host name is raspberrypi.local. Local service cookie is 2113558242.
May 7 22:14:32 raspberrypi wpa_supplicant[405]: wlan0: CTRL-EVENT-ASSOC-REJECT status_code=16
May 7 22:14:33 raspberrypi wpa_supplicant[405]: wlan0: Trying to associate with SSID 'My-network'
May 7 22:14:33 raspberrypi wpa_supplicant[405]: wlan0: CTRL-EVENT-ASSOC-REJECT status_code=16
May 7 22:14:33 raspberrypi ModemManager[408]: <warn> Couldn't find support for device at '/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.1': not supported by any plugin

...and then:

May 7 22:14:34 raspberrypi systemd[1]: Started Hostname Service.
May 7 22:14:35 raspberrypi wpa_supplicant[405]: wlan0: Trying to associate with SSID 'My-network'
May 7 22:14:36 raspberrypi wpa_supplicant[405]: wlan0: CTRL-EVENT-ASSOC-REJECT status_code=16
May 7 22:14:36 raspberrypi wpa_supplicant[405]: wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="My-network" auth_failures=1 duration=10 reason=CONN_FAILED
May 7 22:15:00 raspberrypi dhcpcd[406]: timed out
May 7 22:15:00 raspberrypi dhcpcd[406]: forked to background, child pid 575

[MrEngman]

scan_ssid=1 should be included in the network={...} section.

An additional option ap_scan=x , where x=0, 1 or 2, can be included as a global option.

Details in file /usr/share/doc/wpasupplicant/examples/wpa_supplicant.conf.gz



MrEngman

[fabben]

scan_ssid=1 should be included in the network={...} section.
MrEngman

This is very strange, because I get this error in the log if I use that line:

May 7 22:04:09 raspberrypi wpa_supplicant[396]: Successfully initialized wpa_supplicant
May 7 22:04:09 raspberrypi wpa_supplicant[396]: Line 12: unknown global field 'scan_ssid=1'.
May 7 22:04:09 raspberrypi wpa_supplicant[396]: Line 12: Invalid configuration line 'scan_ssid=1'.
May 7 22:04:09 raspberrypi wpa_supplicant[396]: Failed to read or parse configuration '/etc/wpa_supplicant/wpa_supplicant.conf'.

[fabben]

Ok, _IN_ the network section you wrote. I've tried that now. No error about the line, but no network and the same error:

May 7 23:03:44 raspberrypi wpa_supplicant[408]: wlan0: CTRL-EVENT-ASSOC-REJECT status_code=16

[MrEngman]

Plenty on the internet when googling "wlan0: CTRL-EVENT-ASSOC-REJECT status_code=16"



MrEngman

[fabben]

Yes, I know. I have searched on that but can't find anything useful of that. :-/

I suddenly got this when I tried:

May 7 23:33:09 raspberrypi wpa_supplicant[413]: wlan0: Associated with 38:18:38:58:31:41
May 7 23:33:09 raspberrypi kernel: [ 14.485376] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
May 7 23:33:09 raspberrypi bluetoothd[604]: Bluetooth daemon 5.23
May 7 23:33:09 raspberrypi systemd[1]: Started Bluetooth service.
May 7 23:33:09 raspberrypi systemd[1]: Starting Bluetooth.
May 7 23:33:09 raspberrypi systemd[1]: Reached target Bluetooth.
May 7 23:33:09 raspberrypi bluetoothd[604]: Starting SDP server
May 7 23:33:09 raspberrypi kernel: [ 14.572766] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
May 7 23:33:09 raspberrypi kernel: [ 14.572786] Bluetooth: BNEP filters: protocol multicast
May 7 23:33:09 raspberrypi kernel: [ 14.572809] Bluetooth: BNEP socket layer initialized
May 7 23:33:09 raspberrypi dbus[411]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service'
May 7 23:33:09 raspberrypi bluetoothd[604]: Bluetooth management interface 1.10 initialized
May 7 23:33:09 raspberrypi systemd[1]: Starting Hostname Service...
May 7 23:33:09 raspberrypi bluetoothd[604]: Sap driver initialization failed.
May 7 23:33:09 raspberrypi bluetoothd[604]: sap-server: Operation not permitted (1)
May 7 23:33:09 raspberrypi systemd-hostnamed[607]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
May 7 23:33:09 raspberrypi dbus[411]: [system] Successfully activated service 'org.freedesktop.hostname1'
May 7 23:33:09 raspberrypi systemd[1]: Started Hostname Service.
May 7 23:33:12 raspberrypi wpa_supplicant[413]: wlan0: CTRL-EVENT-DISCONNECTED bssid=38:18:38:58:31:41 reason=0 locally_generated=1
May 7 23:33:12 raspberrypi wpa_supplicant[413]: wlan0: WPA: 4-Way Handshake failed - pre-shared key may be incorrect
May 7 23:33:12 raspberrypi wpa_supplicant[413]: wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="My-network" auth_failures=1 duration=10 reason=WRONG_KEY
May 7 23:33:12 raspberrypi wpa_supplicant[413]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
May 7 23:33:12 raspberrypi kernel: [ 17.487380] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code
May 7 23:33:12 raspberrypi kernel: [ 17.487409] cfg80211: World regulatory domain updated:
May 7 23:33:12 raspberrypi kernel: [ 17.487418] cfg80211: DFS Master region: unset
May 7 23:33:12 raspberrypi kernel: [ 17.487428] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
May 7 23:33:12 raspberrypi kernel: [ 17.487442] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
May 7 23:33:12 raspberrypi kernel: [ 17.487454] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
May 7 23:33:12 raspberrypi kernel: [ 17.487466] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
May 7 23:33:12 raspberrypi kernel: [ 17.487480] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
May 7 23:33:12 raspberrypi kernel: [ 17.487495] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
May 7 23:33:12 raspberrypi kernel: [ 17.487507] cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
May 7 23:33:12 raspberrypi kernel: [ 17.487519] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
May 7 23:33:12 raspberrypi kernel: [ 17.487531] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
May 7 23:33:12 raspberrypi wpa_supplicant[413]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=USER type=COUNTRY alpha2=SE
May 7 23:33:12 raspberrypi kernel: [ 17.522014] cfg80211: Regulatory domain changed to country: SE
May 7 23:33:12 raspberrypi kernel: [ 17.522036] cfg80211: DFS Master region: ETSI
May 7 23:33:12 raspberrypi kernel: [ 17.522045] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
May 7 23:33:12 raspberrypi kernel: [ 17.522059] cfg80211: (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
May 7 23:33:12 raspberrypi kernel: [ 17.522075] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
May 7 23:33:12 raspberrypi kernel: [ 17.522089] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
May 7 23:33:12 raspberrypi kernel: [ 17.522102] cfg80211: (5490000 KHz - 5710000 KHz @ 160000 KHz), (N/A, 2700 mBm), (0 s)
May 7 23:33:12 raspberrypi kernel: [ 17.522114] cfg80211: (57000000 KHz - 66000000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
May 7 23:33:12 raspberrypi wpa_supplicant[413]: wlan0: Trying to associate with SSID 'My-network'
May 7 23:33:13 raspberrypi wpa_supplicant[413]: wlan0: CTRL-EVENT-ASSOC-REJECT status_code=16
May 7 23:33:13 raspberrypi wpa_supplicant[413]: wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="My-network" auth_failures=2 duration=20 reason=CONN_FAILED

I am 100 % SURE it is the right key!

I suspect it can be hardware error or some major error in the installation, and will probably try to reinstall everything some day.

[adamsimms]

I have a very similar issue. I had a wifi connection for months and suddenly nothing. Scan shows the network, but I'm not able to connect.

The error I'm getting when associating a wpa_supplicant file:

Code: Select all

wlan0: Event ASSOC_REJECT (13) received
wlan0: CTRL-EVENT-ASSOC-REJECT status_code=16

More details here: https://raspberrypi.stackexchange.com/q ... a-supplica

Any insight would be helpful.

[tiwen]

I had the same problems (CONN_FAILED). Configurstion was correct. Disabling/reenabling or reboot didnt help.
My solution that worked for me:
I used wpa_cli, entered the terminate command. After a reboot my raspberry was able to connect to wifi again.

[daniele.testa]

Did you even solve this issue? I am having the exact same problem. Tried with several different access points and still does not work.
Same error as you. Tried Rasbian and Ubuntu Server. Even tried using my phone as a access point and places it 10cm from the pi.

Any ideas?

[UnicodeChar]

I found that if I set my 2.4Ghz signal to use CHANNEL 1 (2.412Ghz) I get this EVERY TIME... Any other channel works fine. Hmm.

Originally I had my router on "Auto" for channel, and it picked channel 1, so I got the error. I have a PI4 2GB.

[acrobotic]

Oh man, UnicodeChar, I owe you a beer. I just spent ~3 hours trying to debug Wi-Fi on the Damaso V5 Retropie image, and I had everything working but couldn't connect to the stupid network with the message "reason=CONN_FAILED". I read your answer and was pretty skeptical as it suggests something else could've been going on. But as I reviewed my router settings it was on Channel 1, for the sake of exhausting every option I tried switching it to Channel 2 aaaaaand voila, the silly thing connected. THANK YOU!