Same problem here.
Ubuntu 17.10 beta 2 NVIDIA Corporation GM204M [GeForce GTX 970M] Driver NVIDIA binary 375.82
Changing the brightness via Fn keys or via Settings/Power does not work. Adding acpi_osi=Linux does nothing for me, the problem remains.
Same problem here.
Ubuntu 17.10 beta 2
NVIDIA Corporation GM204M [GeForce GTX 970M]
Driver NVIDIA binary 375.82
Changing the brightness via Fn keys or via Settings/Power does not work.
Adding acpi_osi=Linux does nothing for me, the problem remains.