Enable Ubuntu Login Notification

Many users have asked if there's a way to display a notification message on the login page to indicate company policies like Usage Warnings and System Usage Policy Notices. Yes, it is possible by following the steps provided.

Ubuntu 24.04 LTS uses the GNOME Desktop Manager Version 3 (gdm3), which allows you to add a Usage Warning or System Usage Policy Notice message. This helps meet the majority of company audit and compliance requirements.

Open the greeter.dconf-default in the text editor (nano)

sudo nano /etc/gdm3/greeter.dconf-defaults

Search and change the # banner-message-enable=true to banner-message-enable=true and # banner-message-text='Welcome' to banner-message-text='Welcome'

At the banner-message-text='Welcome' you can put your Usage Warning or System Usage Policy Notice message. If you don’t have one and don’t know how to draft it, here is a sample text :-

USAGE WARNING

This computer system is the property of Your Company Register Name and is intended for authorized use by employees and designated contractors only. Users should not expect privacy while using the company's applications, infrastructure, and services. All activities and files on this system may be monitored, recorded, copied, audited, inspected, and disclosed to authorized personnel and law enforcement.

By logging in, users consent to such monitoring and disclosure. Unauthorized or improper use of this system may lead to disciplinary action or criminal penalties. If you do not agree to these terms, please log off immediately.

Some users may not have the backend IT knowledge to perform such settings. You can simply use the provided code to replace it:

Search for…

# banner-message-enable=true
# banner-message-text='Welcome'

and replace it with…

banner-message-enable=true
banner-message-text="USAGE WARNING\n\nThis computer system is the property of Your Company Register Name and is intended for authorized use by employees and designated contractors only. Users should not expect privacy while using the company's applications, infrastructure, and services. All activities and files on this system may be monitored, recorded, copied, audited, inspected, and disclosed to authorized personnel and law enforcement. \n\nBy logging in, users consent to such monitoring and disclosure. Unauthorized or improper use of this system may lead to disciplinary action or criminal penalties. If you do not agree to these terms, please log off immediately. "

After the settings have been set, run dconf update. When entering message that spans several lines, remember to begin and end the string with =" if your message have ' and use \n for new lines.