1) On the three-stage frequency compensation example from the ASCO tool, this is the amp3, the poles and zeros given by ngspice are wrong. The bode diagram from the AC analysis is what I would expect, the gain is correct as is the UGF. The poles and zeros, are however far from what theory says.
2) Still related to the PZ analysis. I can run a PZ analysis and get the poles with .control and not
with .pz. The reason is that I need "print all" which seems to workonly on a .control loop and not with a dot command.