Introduction
In this article, we will discuss how to stop the GDM (GNOME Display Manager) service on Ubuntu 20.04.
Understanding the GDM Service
Before we proceed, it's essential to understand that the GDM service runs as a systemd service, and it's managed by the systemd init system.
Stopping the GDM Service
$ sudo systemctl stop gdm
A Warning About a Dirty Way
It's worth noting that there's a dirty way to stop the GDM service by setting the DBUS_SESSION_BUS_ADDRESS environment variable and then executing the sudo -E -u gdm command. However, this method is not recommended because it requires running commands as the GDM user, which can potentially lead to security issues.
In this article, we learned how to stop the GDM service on Ubuntu 20.04 using the systemctl command. Remember that it's essential to understand the implications of stopping the GDM service and to use the recommended methods for managing system services.
References
Code Block
$ DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/`id -u gdm`/bus
sudo -E -u gdm
Note
This article is meant for educational purposes only. Always be careful when executing commands as a root user or changing system settings.
- Understand the GDM service and its role in Ubuntu 20.04.
- Learn how to stop the GDM service using the systemctl command.
- Be aware of the potential security risks associated with the "dirty" method of stopping the GDM service.