How to Fix Brightness Control Not Working for Ubuntu & Linux Mint

Опубликовано: 31 Март 2026
на канале: Tips N Trick

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How to fix brightness effect in the linux system
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Brightnesss effect is not working in the linux system
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How to fix brightnesss effect

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Command

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ls /sys/class/backlight

sudo touch /usr/share/X11/xorg.conf.d/20-intel.conf

Now we need to edit this file. You can use any editor be it a terminal one or graphical.

sudo gedit /usr/share/X11/xorg.conf.d/20-intel.conf
Add the following lines to this file:

Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "intel_backlight"
BusID "PCI:0:2:0"
EndSection

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