Enable or Disable Dim Screen in Ubuntu Linux
You can enable or disable the dim screen feature in Ubuntu Linux to control how your screen brightness adjusts based on inactivity or ambient light.
This feature aims to conserve power by dimming the display when your computer is idle or can automatically adjust brightness if your hardware includes a light sensor, a common setting found in many modern Ubuntu installations.
For example, if you’re reading a document and your screen dims unexpectedly in Ubuntu 22.04, checking the “Automatic Screen Brightness” option is your first step.
Managing this setting ensures your screen either stays bright when you’re active or dims to save battery life when you step away.
How to turn on or off the dim screen in Ubuntu Linux
Ubuntu has a built-in feature that dims your screen when the computer is idle. This saves power. The screen will brighten again as soon as you move your mouse or press a key.
If you prefer your screen to stay at its current brightness, you can turn this feature off. If you want to save battery, keep it on.
Follow these steps to change the setting:
- Open your Activities overview and type Settings.
- Click on the Settings icon.
ubuntu linux activities overview - Alternatively, click the system menu in the top-right corner of your screen and select Settings.
ubuntu linux system menu top bar settings - In the sidebar on the left, click on Power (or Power & Battery, depending on your hardware).
ubuntu linux power tile - Look for the Power Saving section.
- Find the Dim Screen When Inactive option.
- Toggle the switch to On to save power, or Off to keep your screen bright.
ubuntu linux dim screen button
Conclusion
Managing your screen brightness is a simple way to control how your laptop uses energy. Remember that your “Power Profiles” settings also affect this. For example, if you set your computer to “Power Saver” mode, it may force the screen to dim more aggressively regardless of this specific setting. By balancing these tools, you can ensure your Ubuntu experience is exactly how you want it.
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Richard
Tech Writer, IT Professional
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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