I found that
sudo modprobe -r psmouse sudo modprobe psmouse proto=imps
enables the middle button, i.e. pasting works. BUT scrolling with touchpad or middle button + trackpoint does not work.
I found that
sudo modprobe -r psmouse
sudo modprobe psmouse proto=imps
enables the middle button, i.e. pasting works. BUT scrolling with touchpad or middle button + trackpoint does not work.