Software & AppsOperating SystemLinux

Why Can’t I Edit Connections in Network Manager? Solution Inside!

Ubuntu 20

In the world of Linux, Network Manager is a vital tool for managing network connections. However, there are times when you may find that you’re unable to edit connections because the “Edit” button is greyed out. This article will explore the reasons behind this issue and provide detailed solutions to help you regain control of your network connections.

Quick Answer

The "Edit" button in Network Manager may be greyed out due to a lack of necessary privileges, issues with Wi-Fi security settings, or a bug in the system. However, there are several solutions to regain control of your network connections, such as manually invoking the connection editor from the command line, running it with elevated privileges, restarting the networking service, modifying NetworkManager configuration, checking Wi-Fi security settings, or using command line tools.

Possible Causes

The inability to edit connections in Network Manager can be attributed to a number of reasons. It could be due to a lack of necessary privileges, issues with Wi-Fi security settings, or even a bug in the system. Let’s delve into the solutions for these issues.

Solutions

1. Manually Invoke the Connection Editor from the Command Line

One of the simplest solutions is to manually invoke the connection editor from the command line. This can be done by running the command nm-connection-editor. This command launches the Network Manager’s connection editor, which allows you to manage your network connections.

nm-connection-editor

2. Run the Connection Editor with Elevated Privileges

In some cases, you may need to run the connection editor with elevated privileges. This can be achieved by prefixing the command with sudo, which stands for “superuser do”. This command allows you to run programs with the security privileges of another user (by default, the superuser).

sudo nm-connection-editor

3. Restart the Networking Service and Modify NetworkManager Configuration

Another solution is to restart the networking service. This can be done by running the following command:

sudo /etc/init.d/networking restart

This command restarts the networking service, which can help resolve any issues that may be preventing you from editing connections in Network Manager.

Additionally, you can modify the NetworkManager configuration. To do this, you need to edit the file /etc/NetworkManager/NetworkManager.conf and change managed=false to managed=true. This change tells NetworkManager to manage all network interfaces.

After making these changes, it’s recommended to run sudo killall NetworkManager. This command stops all running instances of NetworkManager, allowing the changes to take effect.

sudo nano /etc/NetworkManager/NetworkManager.conf
# change managed=false to managed=true
sudo killall NetworkManager

4. Check Wi-Fi Security Settings

If the “Edit” button is greyed out when configuring a Wi-Fi connection, it’s worth checking your Wi-Fi security settings. Ensure that a certificate is chosen in the “Wi-Fi Security” tab. If no certificate is required, mark the checkbox for “No CA certificate is required”.

5. Bridge Configuration

If you have a bridge set up, the “Edit” button may be greyed out due to a bug. However, you can still access the functionality of Network Manager using the command line tool nmcli or by running nm-connection-editor from the command line.

nmcli

Conclusion

The inability to edit connections in Network Manager can be frustrating, but with the solutions provided in this article, you should be able to regain control of your network connections. Whether it’s invoking the connection editor manually, running it with elevated privileges, restarting the networking service, modifying NetworkManager configuration, checking Wi-Fi security settings, or using command line tools, there’s a solution to fit your needs.

Why is the “Edit” button greyed out in Network Manager?

The "Edit" button may be greyed out due to a lack of necessary privileges, issues with Wi-Fi security settings, or a bug in the system.

How can I manually invoke the Network Manager’s connection editor?

You can manually invoke the connection editor by running the command nm-connection-editor in the terminal.

What should I do if I need to run the connection editor with elevated privileges?

To run the connection editor with elevated privileges, you can use the command sudo nm-connection-editor in the terminal. This allows you to run the editor with superuser privileges.

How can I restart the networking service to resolve connection editing issues?

You can restart the networking service by running the command sudo /etc/init.d/networking restart in the terminal. This can help resolve any issues preventing you from editing connections in Network Manager.

How can I modify the NetworkManager configuration?

To modify the NetworkManager configuration, you need to edit the file /etc/NetworkManager/NetworkManager.conf and change managed=false to managed=true. After making this change, it’s recommended to run sudo killall NetworkManager to allow the changes to take effect.

What should I check if the “Edit” button is greyed out for a Wi-Fi connection?

If the "Edit" button is greyed out for a Wi-Fi connection, you should check the Wi-Fi security settings. Ensure that a certificate is chosen in the "Wi-Fi Security" tab. If no certificate is required, mark the checkbox for "No CA certificate is required".

Can I still access Network Manager functionality if I have a bridge set up?

Yes, even if the "Edit" button is greyed out due to a bug with a bridge setup, you can still access Network Manager functionality using the command line tool nmcli or by running nm-connection-editor from the command line.

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