slajerek
Posts: 5
Joined: Wed Apr 18, 2018 6:57 pm

RPI 3 B+ No wireless interfaces found

Wed Apr 18, 2018 7:57 pm

Hi!

When I boot to desktop I see error that "No wireless interfaces found" on a RPI 3 B+, and of course there's no network connection.
The same SD card works flawlessly when inserted to older RPI 3 B (without plus). What's wrong? How to fix this problem?

I tried rpi-update, upgrade, dist-upgrade. No luck... any ideas how to fix this problem?

Thanks in advance.

Regards,
Marcin

pcmanbob
Posts: 9033
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Location: Mansfield UK

Re: RPI 3 B+ No wireless interfaces found

Thu Apr 19, 2018 10:13 am

Hi.

You need to run

Code: Select all

sudo raspi-config
then select localisation options
then change wifi country.

you may also need to unblock the wifi using this command

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sudo rfkill unbolck all

you can also see if the wifi and Bluetooth are blocked by running

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sudo rfkill list all
We want information… information… information........................no information no help
The use of crystal balls & mind reading are not supported

slajerek
Posts: 5
Joined: Wed Apr 18, 2018 6:57 pm

Re: RPI 3 B+ No wireless interfaces found

Wed May 16, 2018 7:42 pm

Thank you for quick answer. I did this already.

The output of

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sudo rfkill list all
tells me

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0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
There's no information about wifi. If I run iwconfig I also do not see any wlan0 interfaces, telling me only that lo and eth0 have

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lo		no wireless extensions.
eth0 		no wireless extensions.
Am I missing something? The same SD card when I put to old Raspberry Pi 3 B v1.2 (not B+) works perfectly fine and wifi is started.

I think it is worth noting that the system is via NOOBs and it was upgraded from older version to the B+.

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HawaiianPi
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Re: RPI 3 B+ No wireless interfaces found

Wed May 16, 2018 7:50 pm

What OS? If it's Raspbian Jessie you should start over with the latest version of Raspbian Stretch 2018-04-18 or newer. Jessie predates the 3B+ and is not compatible (loading the possibly unstable testing firmware with rpi-update will get Jessie booting, but won't fix other problems).
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

msp
Posts: 1
Joined: Mon May 21, 2018 1:21 pm

Re: RPI 3 B+ No wireless interfaces found

Mon May 21, 2018 1:30 pm

In case it helps someone else, adding this into network interface config was the fix for me (after much time spent). NB: whilst the WIFI is connected, the desktop UI still shows "No interfaces found".

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[email protected]:~ $ sudo 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

# MSP HACK
allow-hotplug wlan0
auto wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
I'd already upgrade the OS & configured my interface etc:

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[email protected]:~ $ uname -a
Linux msp-raspberrypi 4.14.34-v7+ #1110 SMP Mon Apr 16 15:18:51 BST 2018 armv7l GNU/Linux
[email protected]:~ $ sudo cat /etc/os-release 
PRETTY_NAME="Raspbian GNU/Linux 9 (stretch)"
NAME="Raspbian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"

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[email protected]:~ $ sudo cat /etc/wpa_supplicant/wpa_supplicant.conf 
country=GB
network={
  ssid="XXXX"
  psk="XXXX"
  key_mgmt=WPA-PSK
}

swastik
Posts: 1
Joined: Fri Aug 17, 2018 11:17 am

Re: RPI 3 B+ No wireless interfaces found

Fri Aug 17, 2018 11:22 am

Try this it worked for me
dtoverlay=pi3-enable-wifi
:)

sigithaq
Posts: 1
Joined: Fri Aug 31, 2018 11:31 am

Re: RPI 3 B+ No wireless interfaces found

Fri Aug 31, 2018 11:35 am

swastik wrote:
Fri Aug 17, 2018 11:22 am
Try this it worked for me
dtoverlay=pi3-enable-wifi
:)
so, what should i write in there ?

ENCOMCTO
Posts: 1
Joined: Sat Sep 08, 2018 12:40 am

Re: RPI 3 B+ No wireless interfaces found

Sat Sep 08, 2018 12:42 am

I'm having the same problem on a RPI 3B and on a Zero W. If I try using raspi-config it's saying it can't communicate with WPA_Supplicant. This is on a clean download using Etcher.

hajo
Posts: 2
Joined: Sat Sep 15, 2018 10:50 am

Re: RPI 3 B+ No wireless interfaces found

Sat Sep 15, 2018 10:55 am

ENCOMCTO wrote:
Sat Sep 08, 2018 12:42 am
I'm having the same problem on a RPI 3B and on a Zero W. If I try using raspi-config it's saying it can't communicate with WPA_Supplicant. This is on a clean download using Etcher.
Same here. After doing a system upgrade recently I lost all network connectivity - wireless and wired. journalctrl shows that the udev worker for all network interfaces fails with a segfault. I suspect a broken FW or driver, I think both got updated. Trying a rollback now but that's not so easy since I have no network left...

hajo
Posts: 2
Joined: Sat Sep 15, 2018 10:50 am

Re: RPI 3 B+ No wireless interfaces found

Sat Sep 15, 2018 3:44 pm

Hours later I gave up; rolling back with an apt which is not online is too much trouble. . My pi is almost stock anyway, so I did a fresh install of the latest distro. Problem solved, both interfaces are back up again. Unfortunately this is not the first time that apt-get upgrade bricked my distro. Fedora-user here — is this known of debian?

Rasilon
Posts: 101
Joined: Wed Mar 11, 2015 7:30 pm

Re: RPI 3 B+ No wireless interfaces found

Thu Sep 20, 2018 10:39 pm

Last update also blew my wifi and bluetooth. I duno what to do

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HawaiianPi
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Re: RPI 3 B+ No wireless interfaces found

Fri Sep 21, 2018 7:44 am

Rasilon wrote:
Thu Sep 20, 2018 10:39 pm
Last update also blew my wifi and bluetooth. I duno what to do
Really odd that you (and others) are having this problem. I'm SSH connected to both a Pi 3B and a 3B+ that have been recently updated (last night), and both are connected to my wireless network. The Pi 3B is USB booted from an SSD running Raspbian Stretch Lite. The Pi 3B+ is booting from a SanDisk Ultra A1 micro SD card (32GB) running Raspbian Stretch Desktop. The uname -r command on either system returns 4.14.70-v7+ for the kernel version.

The Pi 3B+ has been running for awhile now, and has been through several update/upgrade cycles, with the only problem being the shutdown kernel panic due to the recent (and buggy) 20180910 firmware release, which has since been fixed, and did not cause connection issues with my wireless network. The symptom of the bug was that shutdown would fail and end in a kernel panic if Bluetooth was turned off, but there were no problems booting and connecting to WiFi.

What are you using for a power supply?
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

R-A
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Location: Johannesburg, South Africa
Contact: Website

Re: RPI 3 B+ No wireless interfaces found

Sun Sep 30, 2018 2:30 pm

HawaiianPi wrote:
Wed May 16, 2018 7:50 pm
What OS? If it's Raspbian Jessie you should start over with the latest version of Raspbian Stretch 2018-04-18 or newer. Jessie predates the 3B+ and is not compatible (loading the possibly unstable testing firmware with rpi-update will get Jessie booting, but won't fix other problems).
Is there any ways of getting the Wifi working in Jessie? I am using a custom build image (built by someone else) for my solar inverter which still runs on Jessie, and the wifi doesn't work after running apt-get update; apt-get upgrade.
I'm using a Raspberry Pi 3 Model B with 7" LCD Touch screen and Mini USB Wireless Keyboard

deanresin
Posts: 10
Joined: Sun Dec 02, 2018 8:11 am

Re: RPI 3 B+ No wireless interfaces found

Mon Dec 03, 2018 9:44 pm

I updated from Jessie to Stretch and I'm bricked out from the Internet too. This is ridiculous.

I get "No wireless interfaces found" ... "Could not communicate with wpa_supplicant".

I can't even get into the Networking GUI.

pcmanbob
Posts: 9033
Joined: Fri May 31, 2013 9:28 pm
Location: Mansfield UK

Re: RPI 3 B+ No wireless interfaces found

Tue Dec 04, 2018 10:27 am

deanresin wrote:
Mon Dec 03, 2018 9:44 pm
I updated from Jessie to Stretch and I'm bricked out from the Internet too. This is ridiculous.

I get "No wireless interfaces found" ... "Could not communicate with wpa_supplicant".

I can't even get into the Networking GUI.
It was never recommend to upgrade from Jessie to Stretch because a working system was never guaranteed after the upgrade, people found there was mixed success.

The recommend way to upgrade to Stretch has always been to flash a new image to an SD card.
We want information… information… information........................no information no help
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DavidS
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Re: RPI 3 B+ No wireless interfaces found

Tue Dec 04, 2018 1:28 pm

I understand that you had trouble with wifi, though one further question about your issues.

Why did you not have network? Wired ethernet should still have worked without problem, what else was wrong?
RPi = The best ARM based RISC OS computer around
More than 95% of posts made from RISC OS on RPi 1B/1B+ computers. Most of the rest from RISC OS on RPi 2B/3B/3B+ computers

androidi
Posts: 1
Joined: Tue Dec 11, 2018 8:48 pm

Re: RPI 3 B+ No wireless interfaces found

Tue Dec 11, 2018 9:03 pm

I *just* ran to this very same problem myself.

I was fiddling around with connman, which caused some havoc. After 20 mins of crazily whaking my keyboard, I ended up in a situation that wlan0 could not connect to an AP. whoops.

I decided to enter X, only to see that dreaded "No wireless interfaces found" message, and got those same wpa_supplicant error messages while running sudo raspi-config from a terminal.

To fix this, I did the following:

1. I checked my /etc/wpa_supplicant/wpa_supplicant.conf file, and removed all but one wifi network (examples of wpa_supplicant.conf can be found above in this thread).

2. I ran manually, from the CLI: "sudo wpa_supplicant -Dwext -iwlan0 -c/etc/wpa_supplicant/wpa_supplicant.conf" – and it werks! It was even displaying the available networks on top right corner of the screen. Yay! But, it kept the console session reserved... ok, so it's a service. Onwards..

3. enable service: "sudo systemctl enable wpa_supplicant.service"

4. "sudo reboot"

5. boom. instant profit.

PS. I also upgraded from Jessie to Stretch without creating a new SD card image. Oh, and connman does not work on Raspbian without first disabling some other services managing the wifi.

mtroj
Posts: 2
Joined: Wed Jan 01, 2014 11:38 pm

Re: RPI 3 B+ No wireless interfaces found

Sat Dec 15, 2018 8:45 pm

Thanks for the tips androidi. I had the very same problem (it just cropped up a week or so ago) but with your suggestion, all is working again.

Justen
Posts: 1
Joined: Wed Dec 26, 2018 2:18 pm

Re: RPI 3 B+ No wireless interfaces found

Wed Dec 26, 2018 2:26 pm

For mine, I had to use the old interfaces file, the new one was empty.

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sudo mv /etc/network/interfaces /etc/network/interfaces.old
sudo mv /etc/network/interfaces.dpkg-old /etc/network/interfaces
sudo reboot
the contents of interfaces should appear similar to this:

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

iainfm
Posts: 3
Joined: Mon Jan 07, 2013 2:42 pm

Re: RPI 3 B+ No wireless interfaces found

Wed Feb 06, 2019 6:10 pm

Hi,

This doesn't answer the specific question, but it may help someone. My Pi3 (not 3b+) lost it's wlan interface last night after a dist-upgrade. I tracked the problem down the the wifi firmware. The error in dmesg was:

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[    3.971211] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430-sdio.txt failed with error -2
My fix was to move all the files out of /lib/firmware/brcm and replace them with the ones from another Pi3 that was working.

Not sure what caused this, or if this is the best way to fix it, but it's got me working again ;)

iainfm
Posts: 3
Joined: Mon Jan 07, 2013 2:42 pm

Re: RPI 3 B+ No wireless interfaces found

Sat Feb 09, 2019 7:01 pm

iainfm wrote:
Wed Feb 06, 2019 6:10 pm
Hi,

This doesn't answer the specific question, but it may help someone. My Pi3 (not 3b+) lost it's wlan interface last night after a dist-upgrade. I tracked the problem down the the wifi firmware. The error in dmesg was:

Code: Select all

[    3.971211] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430-sdio.txt failed with error -2
My fix was to move all the files out of /lib/firmware/brcm and replace them with the ones from another Pi3 that was working.

Not sure what caused this, or if this is the best way to fix it, but it's got me working again ;)
Looking at this again, the brcmfmac43430-sdio.txt file doesn't exist in the 'bad' copy of the brcm folder I made before replacing it. It doesn't seem to exist in any packages either, according to an apt-file search. It's .bin counterpart exists in firmware-brcm80211, but not the .txt

gbleaves
Posts: 1
Joined: Sat Jun 15, 2019 7:29 pm

Re: RPI 3 B+ No wireless interfaces found

Sat Jun 15, 2019 7:44 pm

Hi there,
I have hit the Wi-fi problem big time today. I had initially setup fine at first wifi was good for a few weeks.
Today I installed a new router ready for an upgrade & I changed the SSID and passwords.
I tried the config.txt files nothing, after playing for hours various things, I came to some conclusions on this issue.

NOTE I realised the main symptom was a complete lack of IP setting at all (run ifconfig and check wlan0)
I can only see the MAC hardware address for wlan0.

From other suggestions, this procedure seemed to work for me, [with the latest build Octoprint / Octopi with a RPI 3B]

I tried using 'sudo raspi-config' interface and change the locale to US and reconfigure.
Then run network configure the SSID and WPA password, save & exit to command.
run 'sudo reboot'
all works OK


I hope this helps.
Steve

moosey
Posts: 1
Joined: Wed Jul 17, 2019 12:41 pm

Re: RPI 3 B+ No wireless interfaces found

Wed Jul 17, 2019 12:58 pm

swastik wrote:
Fri Aug 17, 2018 11:22 am
Try this it worked for me
dtoverlay=pi3-enable-wifi
:)
This worked for me too! After a recent dist upgrade and reboot, there was no wifi hardware being reported. None of the other fixes did anything, but typing the above dtoverlay line into a terminal fixed the problem instantly.

Pugg
Posts: 3
Joined: Sat Jan 12, 2019 8:03 pm

Re: RPI 3 B+ No wireless interfaces found

Sat Nov 02, 2019 9:30 pm

The update wiped out the Wifi operation, was working fine till it got to the update... nothing seems to fix it... tried all the excuses for it not working,, waste of time.. It use to work great, no longer.. :twisted:

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HawaiianPi
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Re: RPI 3 B+ No wireless interfaces found

Mon Nov 04, 2019 7:43 pm

Pugg wrote:
Sat Nov 02, 2019 9:30 pm
The update wiped out the Wifi operation, was working fine till it got to the update... nothing seems to fix it... tried all the excuses for it not working,, waste of time.. It use to work great, no longer.. :twisted:
I recently ran an update/full-upgrade on my 4B2 with Raspbian Buster Lite & 4B4 with Raspbian Buster with desktop, and both are working fine (connected to my WiFi and accessible via SSH/VNC).

So whatever your problem is, it's likely on your end. You need to give us more details if you want help.
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

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