> For case (2) there should be some super-capacitors in the power supply. Agreed, but sadly, I am not aware of any PSU with super-capacitors installed so that

> For case (2) there should be some super-capacitors in the power supply. Agreed, but sadly, I am not aware of any PSU with super-capacitors installed so that it can ride out the 1-2 second flickers. So at the moment there is no built-in ability (besides exclusively using a laptop) to prevent the 1-2 second flickers from also causing a hard shutdown.