Linux
19 Sep 2026
5 min read
Configure Wi-Fi on Ubuntu Server Without Guessing the Netplan Backend
A Netplan Wi-Fi block can be syntactically valid and still be wrong for a particular Ubuntu Server. The two values that cannot safely be copied from an example are the interface name and the renderer. A configuration that names wlp2s0 assumes the machine actually has an interface with that name. Setting renderer: networkd assumes the installation is intended to use systemd-networkd; for Wi-Fi, that backend also relies on wpa_supplicant. Other installations may already be managed by NetworkManager.