← All Kali Issues
Kali Linux

Display brightness control

H Hardware Low

🔴 Error Message

Cannot adjust screen brightness on laptop

📖 What This Means

Backlight driver not loaded.

🔧 Step-by-Step Fix

  1. Check: ls /sys/class/backlight/
  2. Set: echo 50 > /sys/class/backlight/*/brightness
  3. Install: apt install xbacklight

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