Use WildGuppy in Ubuntu To Adjust Screen Brightness Automatically

June 19, 2014 — 1 Comment

Change Ubuntu Laptop brightness automatically

WildGuppy is a simple application that automatically adjusts Ubuntu laptop’s screen brightness depending on one’s sitting environment.

The app changes your laptop’s screen brightness by using camera samples taken at a user definable interval. Besides that, you can always set the brightness manually from Brightness Levels menu. When you choose this option, webcam sampling process will stop!

change screen brightness automatically

About the Feeling lucky option, it takes a sample from your webcam at that time you click on it and set the right brightness level and will not take any further samples.

Install WildGuppy in Ubuntu:

It’s recommended to install the app from developer’s PPA. After that, you can receive updates by Ubuntu’s Software Updater.

To add the PPA, press Ctrl+Alt+T on keyboard to open the terminal. When it opens, run the command below:

sudo add-apt-repository ppa:fantasyleague0629/wildguppy

Then install WildGuppy via:

sudo apt-get update; sudo apt-get install wildguppy

Works on Ubuntu 14.04, Ubuntu 13.10, Ubuntu 13.04, Ubuntu 12.10 and Ubuntu 12.04.

Make WildGuppy running at startup:

Run command to edit the config file.

sudo gedit ~/.config/autostart/wildguppy-gtk.desktop

Type in your password when prompted. Note that terminal will not display your password when typing, just type in mind and hit enter.

When the file opens, paste below content and save it.

[Desktop Entry]



I'm a freelance blogger who started using Ubuntu 5+ years ago and wishes to share my experiences and some useful tips with Ubuntu beginners and lovers. Please notify me if you find any typo/grammar/language mistakes. English is not my native language. Contact me on Google Plus or email to

One response to Use WildGuppy in Ubuntu To Adjust Screen Brightness Automatically

  1. What I would like to see is an auto-brightness tool with a user-defined offset. That would provide my chosen level of brightness throughout the day.

    In this particular app, brightness levels would be my desired brightness levels and the software would try to keep it like that at any ambient light. As it is now, the app will choose the average brightness level for me.

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