Somehow, the Kernel (from /sys/bus/pci/devices/0000:01:00.0/power/runtime_status) says that the GPU is suspended, but NVSMI reports that the GPU is consuming 34 watts of power while suspended, which the battery confirms by reporting a power draw of ~50 watts. So somehow with fine tuned power management, I am using up power significantly than normal power management or 0x01 mode, which makes the GPU idle at around 6 watts.
Running nvidia-smi powers the GPU back on in order to query it, so that 34 W might just be the GPU’s temporary bootup power usage. Unfortunately, I don’t think the driver has a way of querying GPU power use while the GPU is powered off so I don’t think nvidia-smi is useful for this.
Actual power to the GPU is controlled by the system BIOS, so unfortunately I think if the kernel says the device is suspended but it’s still actually powered on, you’ll probably need to contact Intel about that.
I was able to verify that it was continuously drawing 18-30 or so watts while it was supposedly powered off (the battery reported ~50 watts of usage continuously with the CPU at idle) so I doubt it is the power on wattage. However, I will contact Intel about the BIOS issue and see if it’s a bug in the meantime.