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Ubuntu Refuses to Change Backlight Brightness

rated 0 times [ 0] [ 0] / answers: 1 / hits: 1463 / 2 Years ago, wed, february 9, 2022, 7:59:13

I've attempted to change the Backlight Brightness, by both the keyboard setting and directly in the screen settings. Both show that I've changed the brightness down to minimum neither actually changed the brightness level.

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iriousutur

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4 Years ago

answered 2 Years ago aslity · Accepted Answer

Did you set the backlightbrightness to changable in xorg.conf?

You need administrative properties for that, so open a terminal and do:

sudo -H gedit /etc/x11/xorg.conf

then please put this

Option          "RegistryDwords"        "EnableBrightnessControl=1"

As shown here

Section "Device"

..

..

..

Option          "RegistryDwords"         "EnableBrightnessControl=1"

EndSection

If the file does not exist, you can create it.