I think it is that… And I have broken the sensor which sees it…
The strange thing is that the wheel still calibrates perfectly itself.
You just must not touch the wheel while it is auto calibrating because it take as center wherever you move it.
Ahem … that was it.. i just didn’t know which driver to choose from the list.. There were a lot containing (acpi)…. But I had just to pick exactly that “power interface (acpi) pc”…