This works for me, however, instead of looking for the device `TPPS/2 Elan Trackpoint`, I had to use the id of `TrackPoint Keyboard 2`. The downside of this fix is that pasting with the middle button does not work anymore.
S. Vieweg, A. Hughes, K. Starbird, and L. Palen. Proceedings of the 28th international conference on Human factors in computing systems, page 1079--1088. ACM, (2010)
W. Reinhardt, M. Ebner, G. Beham, and C. Costa. Hornung-Pr\ähauser, V., Luckmann, M.(Hg.): 5th EduMedia conference, Salzburg, page 145--156. Citeseer, (2009)