Restore display manager in Debian testing for Gnome, GDM

Wed, Dec 14, 2022

gdm3 not what it is called for enabling and disabling (is what it is in package manager i think)

$ sudo systemctl enable gdm

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. • A unit’s purpose may be to act as a helper for some other unit which has a requirement dependency on it. • A unit may be started when needed via activation (socket, path, timer, D-Bus, udev, scripted systemctl call, …). • In case of template units, the unit is meant to be enabled with some instance name specified.