How to adjust monitor brightness in Linux(GNU) Mint on Sony VAIO VPCEH (Nvidia GeForce 410M) laptop?

Question

NVIDIA

Welcome all. Brightness control does not work on a Sony VAIO VPCEH laptop. Linux Mint OS, NVidia Geforce 410M graphics card.
Console output: $ uname -a
Linux SpSystem 4.10.0-38-generic #42~16.04.1-Ubuntu SMP Tue Oct 10 16:32:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux.
Tried both free drivers and "proprietary" drivers from Cinnamon driver manager, to no avail. Keyboard backlight brightness is not adjustable. In this case, the "screensaver" of the brightness change itself appears and its values ​​\u200b\u200bchange. The command
$ ls /sys/class/backlight/ produces
acpi_video0 (On the NVidia proprietary driver)
on the free one it gives something like: nv blacklight. Rolled xbacklight.
The xset led "value" command does not change anything, nor does the xbacklight -set "value" command. The monitor shines all over. Climbed into /usr/share/X11, but did not change anything there. I read the instructions on Habré https://habr.com/post/236353/, but there is an example for the "video card" of Intel, and I have Nvidia, I think how not to mess things up. For example, the /usr/share/X11/xorg.conf.d/20-intel.conf file is created there, but I don’t have “20” (twentieth) files in this directory at all and it’s not entirely clear what “20” means, because each file in this directory starts with a number, for example: 10-amdgpu.conf ; 51-synaptics-quirks.conf and so on. The video is most likely determined by me, the picture is there, the hot buttons work - the pop-up splash screen is shown and changed, but the brightness itself does not change. The laptop is working, I need information on it, but constantly looking at the monitor that shines on the whole is also not very "hunting".
Question: How can I adjust the backlight of the screen and how can I set it to change from the keyboard? From myself I am ready to provide almost any configs, the output of various commands.
Thank you for attention.

Answer 1

files/links in the /usr/share/X11/xorg.conf.d/ directory
are read as parameters and run with X,
numbers - 10-20-"million", determine the order (the smaller, the earlier it starts

Answer 2

I found on the Internet that I need to create the file usr/share/X11/xorg.conf.d/10-nvidia-brightness.conf and add Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName " BoardName" Option "RegistryDwords" "EnableBrightnessControl=1" EndSection . But I don’t quite understand what to write in BoardName, the output is ~ $ sudo lspci -v -s 01:00.0
01:00.0 VGA compatible controller: NVIDIA Corporation GF119M [GeForce 410M] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Sony Corporation GF119M [GeForce 410M]
Flags: bus master, fast devsel, latency 0, IRQ 30
Memory at d2000000 (32-bit, non-prefetchable) [size=16M]
Memory at c0000000 (64-bit,
I/O ports at 4000 [size=128]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, MSI 00
Capabilities: [b4] Vendor Specific Information: Len=14 <?>
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting <?>
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
Kernel driver in use: nvidia
Kernel modules: nvidiafb, nouveau, nvidia_384_drm, nvidia_384 .