mixed up network configuration in 18.04












1















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





























    1















    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



























      1












      1








      1








      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
















      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






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      share|improve this question













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      share|improve this question








      edited Jan 10 at 18:20









      Zanna

      50.7k13136241




      50.7k13136241










      asked Jan 10 at 16:53









      Dale MurdochDale Murdoch

      62




      62






















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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























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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



                share|improve this answer










                answered Jan 10 at 22:12









                slangasekslangasek

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                2,50811419






























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