Thanks for your attention. I've forgotten to mention that Clevo W350ST uses Haswell chipset with embedded Intel HD4000 and Optimus capable GTX 765M. I suppose that's why there are 2 devices under /sys/class/backlight.
I have attached the resulting udev-db.txt.
Thanks for your attention. I've forgotten to mention that Clevo W350ST uses Haswell chipset with embedded Intel HD4000 and Optimus capable GTX 765M. I suppose that's why there are 2 devices under /sys/class/ backlight.
I have attached the resulting udev-db.txt.