How to Enable Automatic Screen Lock in Ubuntu Linux
Automatic screen lock in Ubuntu Linux secures your computer by locking your session after a set time of inactivity. This handy feature stops others from viewing your open programs and personal files when you step away.
By default, Ubuntu versions like 22.04 LTS often lock your screen after 5 minutes of no mouse or keyboard use. You can easily change this idle timer in your settings to match how you work.
Open System Settings, navigate to Privacy, then Screen. Toggle the Automatic Screen Lock switch to On and set your preferred delay time. This ensures your Ubuntu system locks itself after a period of inactivity.
How to turn on or off automatic screen lock in Ubuntu Linux
Leaving your computer unattended creates an opening for prying eyes. Ubuntu guards against this by locking your session after a set period of inactivity.
Ubuntu Linux automatically locks the screen when there’s no active user activity. This protects your desktop and files from unauthorized access.
Here’s how to turn it on or off in Ubuntu Linux.
Ubuntu Linux has a centralized location for most of its settings. System configurations, user creation, and updates live inside the System Settings panel.
To open System Settings, go to the Activities overview (where you can search for applications) and type Settings.

Alternatively, click the System menu (usually found in the top-right corner of your desktop's top bar).
On the System menu, select Settings, as highlighted below.

In the Settings app, click the Privacy tile to expand it.

In the Privacy settings, click on Screen to open that panel.
In the Screen settings, toggle the Automatic Screen Lock switch to On or Off.

When your screen is locked and you want to unlock it, press the Esc key or swipe up from the bottom of the screen with your mouse.
Enter your password and resume your session.
The display will now lock itself after the chosen timeout period.
Locking your screen automatically takes the guesswork out of physical security:
- An automatic screen lock is a crucial security feature that protects your computer from unauthorized access.
- Ubuntu Linux offers a convenient way to manage the automatic screen lock feature through the System Settings panel.
- Users can customize this feature by toggling the Automatic Screen Lock switch and setting the lock delay to suit their preferences and security needs.
- Remembering to lock your computer screen can be a hassle, but with automatic screen lock, you can have peace of mind knowing your system is protected when idle.
How do I lock my screen automatically in Ubuntu?
Select Settings ▸ Privacy & Security (this is where you manage these settings) from the results. This will open the Privacy & Security panel. Select Screen Lock to open the panel. Make sure Automatic Screen Lock is switched on, then select a length of time from the Automatic Screen Lock Delay drop-down list.
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Richard
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Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.
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