Hello everyone. Found a solution in the form of a GNOME extension!
https://extensions.gnome.org/extension/1625/soft-brightness/
My hardware is
RAM 31.3 GiB
ASUSTeK COMPUTER INC. G752VSK
Intel® Core™ i7-7700HQ CPU @ 2.80GHz × 8 ( no
intel graphics)
NVIDIA GeForce GTX 1070/PCIe/SSE2
inxi -G youswer@no1
Graphics:
Device-1: NVIDIA GP104BM [GeForce GTX 1070 Mobile] driver: nvidia
v:510.47.03
Device-2: 04081-0009510016501004991 USB2.0 HD UVC WebCam type: USB
driver: uvcvideo
Display: x11 server: X.org 1.21.1.3 driver: loaded: nvidia
resolution: <missing: xdpyinfo>
OpenGL: renderer: NVIDIA GeForce GTX 1070/PCIe/SSE2
v:4.6.0 NVIDIA 510.47.03
-`youswer@no1
.o+`-----------
`ooo/ OS: Arch Linux x86_64
`+oooo: Host: G752VSK 1.0
`+oooooo: Kernel: 5.16.5-zen1-1-zen
-+oooooo+: Uptime: 20 hours, 19 mins
`/:-:++oooo+: Packages: 855 (pacman)
`/++++/++++++++: Shell: zsh 5.8
`/++++++++++++++: Resolution: 1920x1080
`/+++ooooooooooooo/` DE: GNOME 41.3
./ooosssso++osssssso+` WM: Mutter
.oossssso-````/ossssss+` WM Theme: Mojave-dark-alt
-osssssso. :sssssso. Theme: Mojave-dark-alt [GTK2/3]
:osssssss/ osssso+++. Icons: Colloid-dark [GTK2/3]
/ossssssss/ +ssssooo/- Terminal: gnome-terminal
/ossssso+/:- -:/+osssso+- CPU: Intel i7-7700HQ (8) @ 3.800GHz +sso+:- .-/+oso: GPU: NVIDIA GeForce GTX 1070 Mobile
++:. -/+/ Memory: 2037MiB / 32055MiB
ls /sys/class/backlight/ youswer@no1
nvidia_0
No difference.
~ » ls /sys/class/backlight/ youswer@no1
acpi_video0
Works fine! And no needed options in Xorg.conf : “RegistryDwords” “EnableBrightnessControl=1”
and more.