Arch Linux

Description: I looked into how it works on Ubuntu. There the lxd service is not enabled. What is enabled is the matching socket. And there's an enabled service that runs `lxd activateifneeded` on boot:

https://github.com/lxc/lxd/blob/lxd-5.6/lxd/main_activateifneeded.go#L35-L42

Supposedly that's their idea of how it should work:

> By default, LXD is socket activated and configured to listen only on a local UNIX socket. While LXD may not be running when you first look at the process listing, any LXC command will start it up.

https://ubuntu.com/server/docs/containers-lxd

My suggestion is to add a service:

/etc/systemd/system/lxd-activateifneeded.service

[Unit]
Description=LXD (activateifneeded)

[Service]
ExecStart=/usr/bin/lxd activateifneeded
Type=oneshot

[Install]
WantedBy=multi-user.target

Then after installation, one starts/enables lxd.socket, and optionally enables lxd-activateifneeded.service.

A possibly related bug report:

 FS#72614 

But it doesn't manifest on my machine.