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Accepted
Frank Barcenas
Asked: 2019-05-25 14:09:31 +0800 CST

can't seem to generate a valid netplan YAML enough to connect to wifi

  • 772

How do I know what the proper syntax for netplan is? I've looked up the netplan docs online and everything I try gives me KEY errors when I try to use netplan generate.

netplan

2 Answers

  1. Best Answer

    In a Ubuntu Desktop installation, you should be using NetworkManager, not netplan, to manage wireless connections.

    Your /etc/netplan/*.yaml file should look like this...

    network:
  version: 2
  renderer: NetworkManager

    then:

    sudo netplan --debug generate # generate script files

    sudo netplan apply # apply new configuration

    In a Ubuntu Server installation, you should be using netplan, and examples of netplan scripts can be seen here.

    Minimal example...

    network:
  version: 2
  renderer: networkd
  wifis:
    wlxxxxxx: # change this to the correct wireless interface name
      dhcp4: yes
      access-points:
        "network_ssid_name":
          password: "**********"

    then:

    sudo netplan --debug generate # generate script files

    sudo netplan apply # apply new configuration

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  2. If you have key-errors then probably your netplan software is too old. Ubuntu LTS 18.04 has an old version. So you should upgrade your netplan.io package to make this work.

    The ubuntu repository on http://nl.archive.ubuntu.com/ubuntu/pool/main/n/netplan.io/ contains a version like netplan.io_0.96-0ubuntu0.18.04.4_amd64.deb, or whatever architecture you might have.

    I installed this on my ubuntu 18.04 LTS with:

    dpkg -i netplan.io_0.96-0ubuntu0.18.04.4_amd64.deb

    and it installs without further dependencies, so it is a drop-in replacement.

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