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I use Ubuntu 14.04 with gnome-connection-manager.

Everything worked well, but then gnome-connection-manager crashed and now I can't start it. The process is not running and a reboot did not help.

How do I troubleshoot this issue?

P.S. Maybe someone could also tell me where gnome-connection-manager saves the connections?

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1 Answer 1

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This will not recover your gnome-connection-manager, but allow you to manage your connections through the terminal:
You can use nmcli instead of your normal connection manager.

The most useful commands are:

  • List all configured connections:

    nmcli con

  • Display the status of all active connections:

    nmcli con stat

  • Start (up) / stop (down) a connection by name (-p = "pretty", displays status):

    nmcli -p con up id "My connection's name"
nmcli con down id "My connection's name"

  • Start (up) / stop (down) a connection by UUID (-p = "pretty", displays status):

    nmcli -p con up uuid xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
nmcli con down uuid xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

    You find out the UUID of your connection by looking at the table outputted by nmcli con.

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