MagicMirror Forum
    • Recent
    • Tags
    • Unsolved
    • Solved
    • MagicMirror² Repository
    • Documentation
    • 3rd-Party-Modules
    • Donate
    • Discord
    • Register
    • Login
    A New Chapter for MagicMirror: The Community Takes the Lead
    Read the statement by Michael Teeuw here.

    Raspberry Pi 3B+ and 4 "No wireless interfaces found"

    Scheduled Pinned Locked Moved Troubleshooting
    12 Posts 3 Posters 24.6k Views 3 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • B Offline
      Blauenfeldt
      last edited by

      Story short. I had installed Raspbian [Full] 64bit via NOOBS on a Pi 4. later I had to use my Pi 3B+, as i couldn’t find the type-C charger. Worked fine. Today after half a year having the pi in the closet, i found out that the internet didn’t work on it. switched to pi 4. Same problem. If i hover the mouse over the wifi icon, I get the message “No wireless interfaces found”. Neither the Ethernet port or wifi works, however Bluetooth are able to turn on.
      I see that other people have this problem too, and as i only have installed MagicMirror, I thought it would be alright to post it here, to see if other found a solution other that format and reinstall raspbian.

      What I did try (without quotation marks, and after = is console output):
      “Sudo ifup wlan0” =
      wpa_suppliant: cannot read contents of /etc/wpa_suppliant/wpa_suppliant.config
      run-parts: /etc/network/if-pre-up.d/wpasuppliant exited with return code 1
      ifup: failed to bring up wlan0

      “sudo ifdown wlan0” =
      ifdown: interface wlan0 not configured

      “sudo rfkill” =
      ID TYPE DEVICE SOFT HARD
      0 wlan phy0 unblocked unblocked
      1 Bluetooth hci0 blocked unblocked

      I will keep updated on how it goes.

      S 1 Reply Last reply Reply Quote 0
      • S Offline
        sdetweil @Blauenfeldt
        last edited by

        @Blauenfeldt are u sure this is 64 bit? Cause pi os is supposed to be64 bit & not ready yet.

        In the. Menu top left select preferences, interfaces I think, to turn on networking.

        Sam

        How to add modules

        learning how to use browser developers window for css changes

        1 Reply Last reply Reply Quote 0
        • B Offline
          Blauenfeldt
          last edited by

          In Noobs the is one with “32 bit” at the end, and that’s not the one i have have installed. My raspbian version in Buster, if that helps.
          what I have:
          Camera Enabled
          SSH Enabled
          VNC Enabled
          SPI Disabled
          I2C Enabled
          Serial Port Disabled (greyed out)
          1-wire Disabled
          Remote GPIO Disabled

          I also can’t select Wifi Country code. It keeps forgetting it after clicking on ok
          If i do it through sudo raspi-config I get “Could not communicate with wpa_suppliant” followed with “There was an error running option I4 Change wi-fi Country”
          This is what I got, when I run: dmesg | grep brcmfmac
          Raspberry Pi 4(2).jpg
          Is this as it should be?
          Thanks for helping me with this.

          1 Reply Last reply Reply Quote 0
          • B Offline
            Blauenfeldt
            last edited by

            I can try and take a picture in Noobs Recovery and upload it.

            S 1 Reply Last reply Reply Quote 0
            • S Offline
              sdetweil @Blauenfeldt
              last edited by

              @Blauenfeldt I never use noobs

              Sam

              How to add modules

              learning how to use browser developers window for css changes

              1 Reply Last reply Reply Quote 0
              • M Offline
                majik655
                last edited by

                @Blauenfeldt
                install it without noobs. Noobs has given me problems in one way or another when I have used it. The issues range from a lot of things depending on what you are doing …

                Go get the raspbian desktop image and just use that … it is just as easy to install as noobs and more than likely you will have working wifi when finished.

                If you have another sd card (and dont want to erase your noobs one) just try it out on a second card… you will get it going.

                1 Reply Last reply Reply Quote 0
                • B Offline
                  Blauenfeldt
                  last edited by

                  I guess I have to do that.
                  I have used a lot of time compiling and makeing things forward/backwards compatible python wise. Is there a way to save and transfer that?

                  1 Reply Last reply Reply Quote 0
                  • B Offline
                    Blauenfeldt
                    last edited by

                    Now that i look this post through, I saw that rfkill says “wlan”. Is it possible, that my Pi looks for wlan0 and not wlan, and therefore not being able to find it?

                    S 1 Reply Last reply Reply Quote 0
                    • S Offline
                      sdetweil @Blauenfeldt
                      last edited by

                      @Blauenfeldt rfkill?

                      sudo ifconfig
                      will list the network interfaces

                      Sam

                      How to add modules

                      learning how to use browser developers window for css changes

                      1 Reply Last reply Reply Quote 0
                      • B Offline
                        Blauenfeldt
                        last edited by

                        I did some digging around the net, and kinda got wifi working again. Wifi itself works fine. I can do sudo iwlist wlan0 scan, and see surrounding wifi. However the drop-down list on the panel does not work.
                        What i did to get my wifi working to this point was changing the /etc/network/interfaces file to

                        auto lo
                        iface lo inet loopback
                        
                        auto eth0
                        iface eth0 inet dhcp
                        
                        auto wlan0
                        allow-hotplug wlan0
                        iface wlan0 inet dhcp
                                wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
                        

                        I found out I had some spelling errors like .config instead of .conf and found a default Buster Wpa_supplicant.conf file

                        here is my new Sudo ifconfig

                        eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
                                inet 192.168.87.198  netmask 255.255.255.0  broadcast 192.168.87.255
                                inet6 fe80::dea6:32ff:fe20:55bf  prefixlen 64  scopeid 0x20<link>
                                ether dc:a6:32:20:55:bf  txqueuelen 1000  (Ethernet)
                                RX packets 1775  bytes 510729 (498.7 KiB)
                                RX errors 0  dropped 0  overruns 0  frame 0
                                TX packets 1633  bytes 972722 (949.9 KiB)
                                TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
                        
                        lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
                                inet 127.0.0.1  netmask 255.0.0.0
                                inet6 ::1  prefixlen 128  scopeid 0x10<host>
                                loop  txqueuelen 1000  (Local Loopback)
                                RX packets 275  bytes 80411 (78.5 KiB)
                                RX errors 0  dropped 0  overruns 0  frame 0
                                TX packets 275  bytes 80411 (78.5 KiB)
                                TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
                        
                        wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
                                inet 192.168.87.199  netmask 255.255.255.0  broadcast 192.168.87.255
                                inet6 fe80::dea6:32ff:fe20:55c0  prefixlen 64  scopeid 0x20<link>
                                ether dc:a6:32:20:55:c0  txqueuelen 1000  (Ethernet)
                                RX packets 20  bytes 2957 (2.8 KiB)
                                RX errors 0  dropped 0  overruns 0  frame 0
                                TX packets 32  bytes 5653 (5.5 KiB)
                                TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
                        

                        Everything works, even ethernet, except for the wifi drop-down menu (shown below)
                        Raspberry Pi 4(4).jpg
                        If I hover the mouse over it it says “connection to dhcpcd lost”
                        If I click on it, it says “No wireless interfaces found”
                        Can not really find anymore answers to this problem.
                        Have i disabled something somewhere?

                        B 1 Reply Last reply Reply Quote 0
                        • 1
                        • 2
                        • 1 / 2
                        • First post
                          Last post
                        Enjoying MagicMirror? Please consider a donation!
                        MagicMirror created by Michael Teeuw.
                        Forum managed by Sam, technical setup by Karsten.
                        This forum is using NodeBB as its core | Contributors
                        Contact | Privacy Policy