I've also checked the content of /sys/class/backlight, and all is correct. If I run sudo cat /sys/class/backlight/nvidia_0/brightness, brightness value changes according to what the computer set. Just, the thing itself is not set trough the screen. Also another note: I try adding kernel parameters to boot, nothing. It still isn't working.
I admit it may be a rare laptop mine, but I think other have RTX/AMD combo.
I've also checked the content of /sys/class/ backlight, and all is correct. If I run sudo cat /sys/class/ backlight/ nvidia_ 0/brightness, brightness value changes according to what the computer set. Just, the thing itself is not set trough the screen. Also another note: I try adding kernel parameters to boot, nothing. It still isn't working.
I admit it may be a rare laptop mine, but I think other have RTX/AMD combo.
Cheers,
Simone