I just installed puppy linux but the screen is literally burning my eyes. The Fn+Brightness key on my laptp doesn't work, I tried to go to setup and change the gamma but it just make the colors darker, the screen itself keeps being extremly bright so I think it's due to the backlight. How can I diminish the backlight or the thing that keeps the screen bright despite me lowering gamma ?
Also when I'm in command prompt mode (GUI closed) the screen is still very bright. Is there a way to fix that too ?
Changing the brightness file with echo X >/sys/class/backlight/acpi_video0/brightness has no effect at all
I managed to add acpi_backlight=vendorin grub as you can find on the internet to fix this problem but this doesn't change anything. Pressing Fn+arrow still doesn't work and changing the brightness file in acpi_video doesn't work either.
I have a Samsung RV515
