We use Jetson Nano development boards with Linux OS. To save power, we send the Jetson to Deep Sleep mode using the J40 1,2 pins, and then waking it up again using the same method.
After wake-up, the throttling red icon turns on immediately (next to the “MAXN” text at the top-right corner of the desktop). Sometimes also one or more of the notifications (“System throttled due to Over-current”, “System throttled due to CPU-therm”, “Caution - Hot surface. Do not touch.”) are displayed.
We suspected over-current, so we disconnected any HW that was connected through the USB ports. Still reproduces.