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Quick Settings is the small system panel opened from the status area at the top right. It handles frequent changes; the full Settings application handles the details.
Read a quick-setting button
Open the system area. A button usually shows both a feature and its current state—for example, the name of the connected Wi-Fi network.
Selecting the main part of a button may turn a feature on or off. An arrow or secondary area may open a list of choices. Read the label before selecting it, especially when disconnecting networking during a download or call.
Depending on the hardware, you may see:
- Wi-Fi or wired networking.
- Bluetooth.
- Sound volume and output.
- Screen brightness on supported displays.
- Power Mode on supported computers.
- Airplane Mode, Night Light, Dark Style, or keyboard backlight.
- A list of applications allowed to continue in the background.
Missing hardware creates missing controls. A desktop monitor, for example, may manage its own brightness buttons rather than exposing a slider in Ubuntu.
A toggle is not the whole settings panel
Turning Wi-Fi off disconnects the computer. Opening Wi-Fi Settings lets you choose and manage networks.
The same pattern applies to Bluetooth and power. Use the quick action when the choice is obvious; open detailed settings when you need to select a device or understand an option.
Read notifications without rushing
Select the clock to open the calendar and notification list. A notification can report an event or offer an action.
Read the application name and message before selecting it. Dismissing a notification removes the message; it does not necessarily undo the event. For example, dismissing an update notice does not uninstall or cancel updates.
Do Not Disturb, when present, reduces interruptions. It does not normally stop applications or prevent their work from continuing.
Lock, log out, and switch user
These actions sound similar because they all leave the current desktop view.
- Lock protects the current session. Applications and documents remain open. Use this when stepping away.
- Switch User leaves your session running while another local account signs in. It appears only when another account is available.
- Log Out ends your session and closes its applications. Save first.
The Super + L shortcut locks the screen on the current documented Ubuntu setup. If it has been customized, the system menu still provides the visible control.
Suspend, restart, and power off
- Suspend keeps the session in memory while much of the hardware sleeps. It uses a small amount of power.
- Restart closes the current session, powers the operating system down, and starts it again.
- Power Off closes the session and turns the computer off.
Closing a laptop lid commonly triggers suspend, but lid behavior can be changed and hardware support varies. A suspended computer is not fully shut down.
Choose the action from the situation
Power-action guide
- Stepping away for a few minutes: lock.
- Letting another account use the computer without ending your work: switch user.
- Ending only your account session: log out.
- Pausing briefly while keeping applications open: suspend.
- Applying a system change or recovering from an ordinary temporary problem: restart.
- Transporting or storing the computer with power fully off: power off.
If a power menu looks different
Ubuntu may combine these controls behind a power icon, change their order, or hide choices that do not apply. Use the visible text rather than identifying a button only by its position.
If the interface stops responding, do not hold the physical power button as the first response. Wait briefly, try switching applications, and use the safe steps in Ubuntu Desktop Troubleshooting for Beginners. A forced power-off can lose unsaved data.
Common mistakes
Using restart when lock is enough. Restart ends applications; lock preserves them.
Assuming a closed lid means powered off. It commonly means suspended.
Turning off Bluetooth instead of disconnecting one device. Open the device list when other Bluetooth devices should remain connected.
Ignoring an active file copy. Wait for it to finish, especially before shutdown or removing external storage.
Practice
Knowledge check
Choose the correct power action.
You are leaving for lunch with an unsaved document open. Another person does not need the computer. Which action protects the screen while keeping the document open, and what should you do before using it?
What to learn next
The next chapter moves from desktop controls to personal data. Start with Ubuntu Files Explained: Home, Downloads, Documents, and More.