Troubleshooting Screen Brightness or Brightness Problems on Linux
The development of the GNU/Linux operating system is growing quite rapidly, there are many new distributions or distributions of the GNU/Linux operating system that keep popping up.
This is due to the nature of Linux itself which is open source or with open source code. So that it can be developed by other people or a community of Linux lovers.
In Indonesia itself, there are many lovers or just users of the distributions of the GNU/Linux operating system.
This is evidenced by the many forums or community groups of Indonesian Linux users on the Internet or social media that are quite active at this time.
From these users, there are problems experienced by each user in using Linux, such as audio does not work, touchpad problems, and Wi-Fi not detected and so on.
One of the most common problems is the brightness or brightness. This problem usually appears when Linux is just ready to be installed, this is caused by not supporting the VGA hardware or the driver with Linux, so the display does not work properly.
This display problem makes the user unable to adjust the brightness as is usually done by pressing certain key combinations on the keyboard or through the settings menu brightness.
It is very disturbing, moreover, physically default after the installation process is complete, the brightness of the monitor or computer screen is at its highest brightness level.
Imagine if you have problems with your eyes, or use the laptop in a room with a rather dim light or at night, this makes users uncomfortable.
There are several ways you can do to adjust the brightness on Linux or work around this problem. One of them is by changing the brightness setting file directly on the Linux operating system. This method is quite easy to do, very suitable for beginners, but not automatic.
Setting Screen Brightness or Brightness in Linux
Screen brightness setting on Linux it is in the “brightness” file in the “/sys/class/backlight/intel_backlight/” directory.
In the file contains a number which is the configuration of the screen brightness level. All you need to do is change the contents of the file and replace it with the desired brightness level.
There are two ways to open the file:
Opening Screen Brightness Settings File Via File Manager on Linux
The first way, by opening the file directly using a text editor. Open File Manager and go to the root directory “/”, then open the folder sys -> class -> backlight -> intel_backlight, as in the following image.
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| Brightness Settings File on Linux |
Then there will be several files in the folder, open the file named “brightness” in the file using a text editor, you can use gedit, leafpad, kate or others.
After the file opens, replace the contents of the file with the number of brightness levels you want. You can adjust the brightness level yourself by trying it.
Then save the file by pressing the combination CTRL + S on keyboard. Then the brightness will change according to the brightness you want.
Opening Screen Brightness Settings File Via Terminal on Linux
The second way is through the Terminal, actually the same as the first way. It’s just that in this way the process of opening files is done through the Terminal.
Open Terminal by pressing the combination CTRL + ALT + T on the keyboard. Then enter the following command in the terminal to open the brightness file using the nano editor:
nano /sys/class/backlight/intel_backlight/brightness
Then a file will open via the “nano” text editor in Terminal as shown below.
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| Opening the Brightness Configuration File Using the Nano Text Editor |
Replace the number in the file with the brightness level you want as in the first method.
Save the file by pressing the combination CTRL + O on the keyboard, and exit by pressing the combination CTRL+X.
That’s one way that can be taken to adjust the screen brightness on Linux. Hopefully useful and helpful.
