How To Adjust Screen Brightness in linux based OS

shivam dwivedi
shivam dwivedi
August 25, 2021

Today we will use xrandr tool to adjust screen brightness By Using Terminal

What is xrandr tool

The xrandr program is used to set the size, orientation and reflection of the outputs for a screen.

Using Xrandr, we can also display the current state of the system screen, change or set the resolution, disable disconnected outputs and enable connected ones. 

I have divide it on steps

Step 1. I Will Select mine Output Screen.

Step 2. I will adjust Brightness of screen

 

Step 1: Select Output Screen

Let's select Output screen name by using xrandr tool

COMMAND

$ xrandr -q

 


here i am able to see mine current active screen is VGA-1

Let's select that screen


Step 2 : Adjust Brightness of screen

The brightness value must be between 0.0 to 1.0.

where 0.0 refers the dimmest (full black) and

1.0 refers the brightest value.

For example, to set screen brightness value as 0.6, run:

COMMAND