How to set brightness level even lower than default minimum?

Question

I am an ex-Windows user, I noticed that minimum level of screen brightness on ubuntu is way brighter than minimum level on windows when I was using it on the same hardware. I was wondering if I can set the brightness level on ubuntu at a level even lower than the minimum level it allows, because default minimum brightness on ubuntu is too brighter for me. Is there any tweak with system settings which I can employ to reduce my screen brightness even further than what default system settings allow?

Answer 1

Edit the following file -

sudo nano /sys/class/backlight/acpi_video0/brightness

and change the value to a lower value.

For more methods, refer to question:Decrease Backlight Below Minimum.

Answer 2

You could try

acpi_backlight=vendor

as a Kernelparameter. I had such a problem, too. This parameter solved it for me. You can read here for Kernelbootparameters..