ArchLinux + Gnome 3.12 + samsung-tools

[Zverushko]

if I install samsung-tools from aur, systemd-backlight not set brightness from boot
how fix it?

[postblue]

if I install samsung-tools from aur, systemd-backlight not set brightness from boot
how fix it?

This is not the only backlight-related issue for me. I'm using Arch with Linux 3.16.1, GNOME 3.12.2 and systemd 215-4. The samsung backlight module is simply not working at all: I have to force X11 to use intel_backlight instead of samsung's to make backlight work, as adding acpi_backlight=vendor and other stuff to GRUB doesn't make any change on my N210.
And intel_backlight is less smooth than samsung's used to be, the minimal level is a black screen, but samsung's isn't adjusting backlight at all now, I hope it could be fixed in some way.