Brightness on a Lenovo ThinkPad P52 no longer controllable after updating nvidia-drivers to 525.xx series

[amrits]

Please verify the fix with latest released driver 525.116.03 and share test results.
https://in.download.nvidia.com/XFree86/Linux-x86_64/525.116.03/NVIDIA-Linux-x86_64-525.116.03.run