Hi - it’s been 6 months …
Note the previous discussion on this was closed (unsolved):
Unfortunately there was confusion between the BACKLIGHT and the ability to adjust the brightness. Oh dear. The problem is not adjustable brightness. The BACKLIGHT is turned off when the nvidia driver updates > v470 (!)
I have just tried 535.113.01 still bad. The laptop display goes very dim. hard to read. The 2nd monitor (attached by HDMI) is fine.
GOOD LAPTOP BACKLIGHT: 470.199.02
BAD LAPTOP BACKLIGHT: 535.113.01
Please notice this driver has been broken for YEARS. Does NVidia still do computer graphics?
This 17" razer blade pro has a 4K IGZO Touch Display UHD 3840x2160 with NVidia GSync
Still a very good display…
It’s becoming an issue having to revert to version 470.
output from “kscreen-console bug” is attached.
kscreen.console.txt (16.2 KB)
lshw -C display
*-display
description: VGA compatible controller
product: GP104BM [GeForce GTX 1080 Mobile]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
configuration: driver=nvidia latency=0
resources: irq:150 memory:db000000-dbffffff memory:b0000000-bfffffff memory:c0000000-c1ffffff ioport:e000(size=128) memory:c0000-dffff
*-graphics
product: EFI VGA
physical id: 3
logical name: /dev/fb0
capabilities: fb
configuration: depth=32 resolution=800,600