Before I had said there was a bug with Peppermint where the boot process would hang and networking would act like it's connected but wouldn't go anywhere for stretches of time.
Latest update has apparently fixed these problems. I do not know what's in the new kernal but by appearances, backed by several reboots, a full shutdown and powerup, have pointed at things working as they should.
Pity my gamepad is apparently dead now. Oh well.