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...










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    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




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      edited Jan 10 at 18:20









      Zanna

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      asked Jan 10 at 16:53









      Dale MurdochDale Murdoch

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          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.






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            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



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                answered Jan 10 at 22:12









                slangasekslangasek

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