That was the issue. I think I had searched for an enable setting in Configuration.h and not finding one assumed it was just a thing that could be set on the fly.
Also was reading through the marlin docs on linear advance, taking it step by step. It shows the setting to enable in Configuration_adv.h but only after all the sections about how to calibrate it. Slightly confusing.
Also was reading through the marlin docs on linear advance, taking it step by step. It shows the setting to enable in Configuration_adv.h but only after all the sections about how to calibrate it. Slightly confusing.