Why can’t I start nvidia-powerd service even after I reinstalled the NVIDIA graphics driver?
Are you sure your graphics card supports it.I have a GTX 1650
and get the same error and as far as I know my card doesn’t support it.I just ignore it.
The nvidia-powerd service is specific to certain laptops and only very limited gpus. That is a notification to be ignored by others.
If it bothers you then you might eliminate the notification by disabling the service with sudo systemctl disable nivdia-powerd.service. After doing this the notice will no longer appear.