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. Zubiaga, C. Körner, and M. Strohmaier. Proceedings of the 22nd ACM conference on Hypertext and hypermedia, page 93--102. New York, NY, USA, ACM, (2011)