Enable "high brightness" mode directly from Windows command line

Command Center

2 min read

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26-10-2024

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If you're looking to adjust your laptop or monitor's brightness settings quickly, particularly to enable "high brightness" mode, you may find it cumbersome to navigate through Windows settings. Fortunately, Windows provides a way to adjust these settings directly from the command line. This article will guide you through the process, along with some practical insights and additional information.

Problem Scenario

Many users often struggle with adjusting the brightness of their screens, especially in environments where lighting conditions can change rapidly. For users who spend a lot of time on their laptops or PCs, accessing the brightness settings every time can be tedious. Thus, enabling "high brightness" mode directly from the command line can greatly enhance the user experience.

Original Code Snippet

While the original request didn't include specific code, you might typically find scripts or commands that look something like this:

powercfg /setacvalueindex SCHEME_CURRENT SUB_VIDEO VIDEO_BRIGHTNESS 100
powercfg /setdcvalueindex SCHEME_CURRENT SUB_VIDEO VIDEO_BRIGHTNESS 100
powercfg /apply SCHEME_CURRENT

These commands utilize the built-in powercfg utility to set the brightness to its maximum on both AC power and battery modes.

How to Enable High Brightness Mode

To enable "high brightness" mode using the command line, follow these steps:

1. Open Command Prompt: Press Win + R, type cmd, and hit Enter.

2. Execute the Commands: Copy and paste the following commands one by one into the Command Prompt, pressing Enter after each command:

   powercfg /setacvalueindex SCHEME_CURRENT SUB_VIDEO VIDEO_BRIGHTNESS 100
   powercfg /setdcvalueindex SCHEME_CURRENT SUB_VIDEO VIDEO_BRIGHTNESS 100
   powercfg /apply SCHEME_CURRENT
   

3. Verify Your Changes: After executing these commands, you should notice an immediate increase in brightness. If you need to lower the brightness later, simply replace 100 with your desired brightness level.

Why Use Command Line for Brightness Adjustment?

Using the command line for brightness adjustment has several advantages:

• Speed: It’s faster than navigating through GUI settings, particularly if you need to make frequent adjustments.
• Automation: You can create scripts to automate the brightness adjustment based on time of day or specific triggers.
• Remote Management: If you manage multiple machines, using command line scripts can help you manage settings remotely without having to access each machine directly.

Additional Tips and Examples

• Batch File: If you frequently change your brightness settings, consider creating a batch file with the commands. Simply save the commands in a .bat file and double-click to execute.

• Shortcut Creation: You can create a desktop shortcut to the batch file for even easier access.

• Using Windows PowerShell: If you prefer PowerShell over Command Prompt, you can use similar commands within a PowerShell window.

Useful Resources

• Microsoft Powercfg Command Documentation
• How to Create a Batch File

Conclusion

Enabling "high brightness" mode directly from the Windows command line is an efficient way to manage your display settings. By using the powercfg utility, you can easily adjust brightness levels with just a few commands. Whether you're looking to speed up your workflow, automate processes, or manage multiple devices, this method can save you time and enhance your productivity.

By incorporating these practices into your daily routine, you’ll find that managing brightness settings is not only quick but also significantly less frustrating. Happy computing!