Linux environments often enforce automatic screen locking after a period of inactivity to enhance security. Returning from system sleep or suspend also triggers screen locking by default, ensuring consistent protection against unauthorized access.

When enabled, the lock screen displays the SDDM login interface on KDE-based distributions such as Kubuntu. This requires re-authentication before restoring the user’s active session, helping maintain privacy and control.

In KDE, automatic screen locking parameters can be fine-tuned through System Settings. Adjusting idle timeouts or disabling lock-on-wakeup provides greater flexibility, allowing the user experience to match personal security and convenience needs.

Steps to configure lock screen for KDE:

  1. Launch System Settings from the Application Launcher.
  2. Click on Workspace Behaviour on the sidebar.
  3. Go to Screen Locking panel from the sidebar.
  4. Click on Lock screen automatically checkbox to uncheck and disable the automatic lock screen.

    Change the time to set the idle time required to trigger automatic screen lock. Uncheck the After waking from sleep option not to launch screen lock when the system wakes up from sleep.

  5. Click on the Apply button to save the configuration changes.
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