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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    WIFI issues

    Scheduled Pinned Locked Moved Help and Support
    wificonfigurationnetwork
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    • R
      rasp_renegade @mitu
      last edited by

      Thanks for the reply @mitu

      The output is
      sudo: UNable to resolve host MiPi2
      sudo: rfkill command not found

      Apologies for not stating this is onboard WIFI. Ifconfig shows an IPv6 address, so you would think it was working.

      R mituM 2 Replies Last reply Reply Quote 0
      • R
        rasp_renegade @rasp_renegade
        last edited by rasp_renegade

        @rasp_renegade

        Also, to simplify things I moved closer to my router so also have a wired connection. That is jacked up too since I cannot ping the default gateway

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        • mituM
          mitu Global Moderator @rasp_renegade
          last edited by

          @rasp_renegade said in WIFI issues:

          sudo: UNable to resolve host MiPi2

          That's not encouraging. Did you modify the /etc/hosts file ? What does ifconfig shows ?

          1 Reply Last reply Reply Quote 0
          • R
            rasp_renegade
            last edited by rasp_renegade

            @mitu said in WIFI issues:

            @rasp_renegade said in WIFI issues:

            sudo: UNable to resolve host MiPi2

            That's not encouraging. Did you modify the /etc/hosts file ? What does ifconfig shows ?

            Not encouraging indeed!!
            the hosts file is empty

            IFCONFIG
            "lo" only shows the loopback address 127.0.0.1 with mask of 255.0.0.0
            455 errors
            no MAC address is shown

            "wlan0" previously displayed two iPv6 entries, but I must have gotten rid of it with the reference posts above.
            700 errors
            MAC address is displayed

            mituM 1 Reply Last reply Reply Quote 0
            • mituM
              mitu Global Moderator @rasp_renegade
              last edited by

              @rasp_renegade said in WIFI issues:

              the hosts file is empty

              It shouldn't be. Add the following to the file (assuming your hostname is mipi2.

              127.0.0.1	localhost
              ::1		localhost ip6-localhost ip6-loopback
              ff02::1		ip6-allnodes
              ff02::2		ip6-allrouters
              
              127.0.1.1	mipi2
              

              Normally you'd use sudo nano /etc/hosts to edit the file, if that doesn't work, try sudo su and then name /etc/hosts.

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              • R
                rasp_renegade
                last edited by rasp_renegade

                It looks like that now. Strange it had the very first hostname of MiPi, eventhough the outputs suggested the name I gave it "MiPi2".

                I can ping 127.0.0.1 if that helps.

                IFCONFIG shows less errors now, but still not able to ping the gateway

                Actually, I should mention that the Pi can see all SSIDs that are broadcasting (including my own). Just to eliminate assumptions, I did verify I have the correct network key by connecting from another device.

                mituM 1 Reply Last reply Reply Quote 0
                • mituM
                  mitu Global Moderator @rasp_renegade
                  last edited by

                  @rasp_renegade Try looking for errors in the WiFi service:

                  sudo systemctl status wpa_supplicant
                  dmesg | tail -n 20
                  

                  Ideally you should try reverting the changes you made for disabling IPv6, maybe inadvertently you disabled something else also.

                  R 1 Reply Last reply Reply Quote 0
                  • R
                    rasp_renegade @mitu
                    last edited by rasp_renegade

                    @mitu said in WIFI issues:

                    @rasp_renegade Try looking for errors in the WiFi service:

                    sudo systemctl status wpa_supplicant
                    dmesg | tail -n 20
                    

                    Ideally you should try reverting the changes you made for disabling IPv6, maybe inadvertently you disabled something else also.

                    Here is the output:
                    sudo: unable to resolve host MiPi02

                    -wpa_supplicant .service - WPA supplicant
                    Loaded: loaded (/lib/systemd/system/wpa_supplicant.services: disabled)
                    Active: inactive (dead)

                    --dmesg.service
                    Loaded: not-found (Reason: No such file or directory)
                    Active: inactive (dead)

                    As far as reverting , this file is back to where it was - etc/modprobe.d/ipv6.conf

                    Unless I was in the wrong place before, cmdline.txt loks different, only has a single line.

                    Is there a way to reset all connections to default?

                    mituM 1 Reply Last reply Reply Quote 0
                    • mituM
                      mitu Global Moderator @rasp_renegade
                      last edited by

                      @rasp_renegade said in WIFI issues:

                      Is there a way to reset all connections to default?

                      Edit the /etc/wpa_supplicant/wpa_supplicant.conf file and remove the contents related to your WiFi SSID. Edit /etc/network/interfaces and remove the stanzas related to wlan0.

                      sudo: unable to resolve host MiPi02

                      sudo not working seems still be a problem. If your /etc/hosts has the correct entries, check /etc/hostname and make sure the hostname is correctly set there. If it's not, try setting it using hostnamectl (you'll need root permissions to do that).

                      R 1 Reply Last reply Reply Quote 0
                      • R
                        rasp_renegade @mitu
                        last edited by rasp_renegade

                        @mitu said in WIFI issues:

                        @rasp_renegade said in WIFI issues:

                        Is there a way to reset all connections to default?

                        Edit the /etc/wpa_supplicant/wpa_supplicant.conf file and remove the contents related to your WiFi SSID. Edit /etc/network/interfaces and remove the stanzas related to wlan0.

                        sudo: unable to resolve host MiPi02

                        sudo not working seems still be a problem. If your /etc/hosts has the correct entries, check /etc/hostname and make sure the hostname is correctly set there. If it's not, try setting it using hostnamectl (you'll need root permissions to do that).

                        You will have a good laugh at this... in the hosts file I had MiPi02, in the hostname file I had MiPi2. LOL

                        Pinging MiPi02 now resolves to the loopback address. I can no longer see my WIFI network from the GUI of RetroPie now though. So be it.

                        I am going to try to manually copy all info from the files listed in the quote above, from the good image into this one. This should work yes?

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                        • R
                          rasp_renegade
                          last edited by

                          @mitu

                          You forgot to ask me an important question, "Is there a copy of that image?"

                          The answer is yes!!! I am now back in business. This time I will pay close attention to what the heck I am changing. This was a great learning opportunity, however, so thank you very much for your support. =)

                          I have two cards for the sake of clustering, in case you were wondering.

                          1 Reply Last reply Reply Quote 0
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