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.
A. Ritter, C. Cherry, and B. Dolan. Human Language Technologies: The 2010 Annual Conference of the North American Chapter of the Association for Computational Linguistics, page 172--180. Association for Computational Linguistics, (2010)
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)