Im a fairy new user at Linux.

I have Ubuntu 18.04 on a host at paperspace.

I'm following this guide: https://www.teknotut.com/en/install-vnc-server-with-gnome-display-on-ubuntu-18-04/

Beside that I installed ZeroTier for VPN access.

Everything in the guide worked fine except this line:

sudo systemctl enable gdm

I get the following error:

The unit files have no installation config (WantedBy, RequiredBy, Also, Alias

settings in the [Install] section, and DefaultInstance for template units).

This means they are not meant to be enabled using systemctl.

Possible reasons for having this kind of units are:

A unit may be statically enabled by being symlinked from another unit's

.wants/ or .requires/ directory.

  1. A unit's purpose may be to act as a helper for some other unit which has

a requirement dependency on it.

  1. A unit may be started when needed via activation (socket, path, timer,

D-Bus, udev, scripted systemctl call, ...).

  1. In case of template units, the unit is meant to be enabled with some

instance name specified.

How can I fix this?


No need to enable, it is get auto configured while setup. And you can change which default Display Manager you want using:

dpkg-reconfigure gdm

Just reboot once.

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