I followed this guide_Power_Management) to set up RTD3 on my laptop, added udev rules, added module parameters, enabled nvidia-persistenced service then reboot the computer but the output of cat /proc/driver/nvidia/gpus/0000:01:00.0/power said that RTD3 is not supported:
Runtime D3 status: Not Supported Video Memory: Active GPU Hardware Support: Video Memory Self Refresh: Supported Video Memory Off: Supported Power Limits: Default: N/A milliwatts GPU Boost: N/A milliwatts I booted to Window and used Asus armoury crate to check and after a few seconds of inactivity the GPU tab will stop reading core/memory clock, voltage, etc, and show "Power saving". And if I open a game (Apex legend) the GPU will turn on again and work normally. Which mean that RTD3 does work on my laptop and on Window only. Any ideas ?