How to disable automatic suspend in Kubuntu (KDE)

Kubuntu uses the KDE Plasma desktop environment, which includes robust Power Management features that can suspend or hibernate a system automatically after a set time of inactivity. This configuration is useful for saving power on laptops and shared workstations. In some scenarios, users require continuous uptime to run services, monitors, or specialized applications that must not be interrupted by automatic suspend.

Disabling automatic suspend can be important for professionals who manage compute-intensive tasks or background processes. Running virtual machines, performing scientific computations, or providing remote access often calls for uninterrupted operation. Ensuring that Kubuntu remains active also enables consistent access to networked resources or servers.

Many system-level power management options rely on systemd, which works with policies defined in logind.conf. Adjusting these settings prevents unwanted suspension on lid closure or inactivity. Changes can be made to graphical power settings or system files, depending on how users prefer to manage power states.

1. Open the System Settings from the application launcher in Kubuntu.
2. Select the Power Management or Energy Saving section in the sidebar.
3. Set the suspend timeout to “Never” or disable the suspension feature for both on battery and plugged-in modes.
4. Click “Apply” or “OK” to save the changes and exit.

   Ensure the display dimming and screen lock preferences in the same Power Management section match your workflow, as they can also impact usability.