mixed up network configuration in 18.04












0















Recently upgraded to 18.04 from 14.04 (in steps of course)



Just about everything works. Have network access, and remote access via ssh.



Desktop sharing (VNC) however doesn't work and can't be enabled. When I'm trying to enable, it shows "no networks selected for sharing" as shown below



Screen Sharing config:



screen sharing dialog showing no networks selected



Dug in a bit and found that I can't access NetworkManager GUI. /etc/network/interfaces still exists and configures eth0. nmtui works however...



netplan generate doesn't generate anything. Created a yaml file under /etc/netplan pointing to NetworkManager as renderer, but netplan apply doesn't fix my problem...



By the way, nmtui shows the netplan-eth0 interface but it is not active, nor can it be activated...










share|improve this question









New contributor




Dale Murdoch is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

























    0















    Recently upgraded to 18.04 from 14.04 (in steps of course)



    Just about everything works. Have network access, and remote access via ssh.



    Desktop sharing (VNC) however doesn't work and can't be enabled. When I'm trying to enable, it shows "no networks selected for sharing" as shown below



    Screen Sharing config:



    screen sharing dialog showing no networks selected



    Dug in a bit and found that I can't access NetworkManager GUI. /etc/network/interfaces still exists and configures eth0. nmtui works however...



    netplan generate doesn't generate anything. Created a yaml file under /etc/netplan pointing to NetworkManager as renderer, but netplan apply doesn't fix my problem...



    By the way, nmtui shows the netplan-eth0 interface but it is not active, nor can it be activated...










    share|improve this question









    New contributor




    Dale Murdoch is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      0












      0








      0








      Recently upgraded to 18.04 from 14.04 (in steps of course)



      Just about everything works. Have network access, and remote access via ssh.



      Desktop sharing (VNC) however doesn't work and can't be enabled. When I'm trying to enable, it shows "no networks selected for sharing" as shown below



      Screen Sharing config:



      screen sharing dialog showing no networks selected



      Dug in a bit and found that I can't access NetworkManager GUI. /etc/network/interfaces still exists and configures eth0. nmtui works however...



      netplan generate doesn't generate anything. Created a yaml file under /etc/netplan pointing to NetworkManager as renderer, but netplan apply doesn't fix my problem...



      By the way, nmtui shows the netplan-eth0 interface but it is not active, nor can it be activated...










      share|improve this question









      New contributor




      Dale Murdoch is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      Recently upgraded to 18.04 from 14.04 (in steps of course)



      Just about everything works. Have network access, and remote access via ssh.



      Desktop sharing (VNC) however doesn't work and can't be enabled. When I'm trying to enable, it shows "no networks selected for sharing" as shown below



      Screen Sharing config:



      screen sharing dialog showing no networks selected



      Dug in a bit and found that I can't access NetworkManager GUI. /etc/network/interfaces still exists and configures eth0. nmtui works however...



      netplan generate doesn't generate anything. Created a yaml file under /etc/netplan pointing to NetworkManager as renderer, but netplan apply doesn't fix my problem...



      By the way, nmtui shows the netplan-eth0 interface but it is not active, nor can it be activated...







      networking 18.04 network-manager sharing netplan






      share|improve this question









      New contributor




      Dale Murdoch is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question









      New contributor




      Dale Murdoch is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question








      edited Jan 10 at 18:20









      Zanna

      50.4k13133241




      50.4k13133241






      New contributor




      Dale Murdoch is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked Jan 10 at 16:53









      Dale MurdochDale Murdoch

      11




      11




      New contributor




      Dale Murdoch is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      Dale Murdoch is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Dale Murdoch is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






















          1 Answer
          1






          active

          oldest

          votes


















          0














          Upgrading an existing installation does not replace /etc/network/interfaces with netplan, and if /etc/network/interfaces exists and is populated, NetworkManager respects this configuration and treats those devices as unmanaged.



          If you want to manage eth0 with NetworkManager, you need to delete / comment out the configuration for this interface in /etc/network/interfaces.






          share|improve this answer























            Your Answer








            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "89"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });






            Dale Murdoch is a new contributor. Be nice, and check out our Code of Conduct.










            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1108643%2fmixed-up-network-configuration-in-18-04%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            Upgrading an existing installation does not replace /etc/network/interfaces with netplan, and if /etc/network/interfaces exists and is populated, NetworkManager respects this configuration and treats those devices as unmanaged.



            If you want to manage eth0 with NetworkManager, you need to delete / comment out the configuration for this interface in /etc/network/interfaces.






            share|improve this answer




























              0














              Upgrading an existing installation does not replace /etc/network/interfaces with netplan, and if /etc/network/interfaces exists and is populated, NetworkManager respects this configuration and treats those devices as unmanaged.



              If you want to manage eth0 with NetworkManager, you need to delete / comment out the configuration for this interface in /etc/network/interfaces.






              share|improve this answer


























                0












                0








                0







                Upgrading an existing installation does not replace /etc/network/interfaces with netplan, and if /etc/network/interfaces exists and is populated, NetworkManager respects this configuration and treats those devices as unmanaged.



                If you want to manage eth0 with NetworkManager, you need to delete / comment out the configuration for this interface in /etc/network/interfaces.






                share|improve this answer













                Upgrading an existing installation does not replace /etc/network/interfaces with netplan, and if /etc/network/interfaces exists and is populated, NetworkManager respects this configuration and treats those devices as unmanaged.



                If you want to manage eth0 with NetworkManager, you need to delete / comment out the configuration for this interface in /etc/network/interfaces.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Jan 10 at 22:12









                slangasekslangasek

                2,46311419




                2,46311419






















                    Dale Murdoch is a new contributor. Be nice, and check out our Code of Conduct.










                    draft saved

                    draft discarded


















                    Dale Murdoch is a new contributor. Be nice, and check out our Code of Conduct.













                    Dale Murdoch is a new contributor. Be nice, and check out our Code of Conduct.












                    Dale Murdoch is a new contributor. Be nice, and check out our Code of Conduct.
















                    Thanks for contributing an answer to Ask Ubuntu!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1108643%2fmixed-up-network-configuration-in-18-04%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    How did Captain America manage to do this?

                    迪纳利

                    南乌拉尔铁路局