Power down... power up...
I would say that most pilots who have flown the 320 series for any period of time would hav seen or been asked my maintenance to do the power down.
In 10k hours on the baby bus, 3 times comes to mind, 2 reset the issue and the 3rd was never going to work!
Ahhh computers, software...
Now where is that old Cessna and the 6 pack?