Can't change brightness

[Michael]

Hello,
I've installed Peppermint on a Packard Bell Easynote TJ66.
It works pretty fine but I can't adjust the brightness. The brightness cursor moves right and left but nothing changes on the screen.

To make my eyes burn a little less (because it's too bright), I type the following command, which I've found in the internet, in the terminal :
xrandr --output LVDS-1 --brightness 0.1

But it doesn't really change the brightness. It's like editing a photo to make it lighter or darker. It changes the light contrasts.

Does anyone have any idea how I can adjust the brightness of my screen?

Thank you in advance

Michael

[Peppermint OS]

The has been some talk about that. Please give this a read and see if it help.
https://sourceforge.net/p/peppermintos/pepos/hardware/thread/839b24ef80/?limit=25#666d

[Michael]

Thanks for your answer.

The link you gave me didn't really address my problem.

However, I found a solution (thank you ChatGPT). Here it is :

Type in the following command in the terminal :

ls /sys/class/backlight/

If this command lists a directory with a name like intel_backlight or acpi_video0, then you can try using the following command to adjust the backlight:

sudo tee /sys/class/backlight/intel_backlight/brightness <<< "percentage"

Replace "intel_backlight" with the name of the directory listed by the previous command, and "percentage" with the desired brightness level, ranging from 0 to the maximum value reported by the following command:

cat /sys/class/backlight/intel_backlight/max_brightness

[alynur]

This looks to be for intel processors only.

[T]

   Should work natively

FN + F8 ## LOWER
FN + F9 ## RAISE