Following hints from an unrelated thread (1), I noticed that the output of
'xinput list-props' has very different entries on T8 and on T9.
I thought I could simply use the same settings on T9 and T8 but because of
this situation I am still somehow stuck in the middle of the touchpad
settings. For now I have a choice between:
1. slow and somehow accurate and
2. fast enough but quite inaccurate nearby the target.
I am not sure to be able to find a way to strike the right balance, so I
wonder if there is a possibility to tweak it and come "back" to way the
touchpad used to be managed in T8.
(1)
https://trisquel.info/en/forum/libreboot-t400-minifree-reduces-price-once-again#comment-116782