Comment 3 for bug 210085

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Robert Persson (ireneshusband) wrote :

Apparently the issue is due to the fact that that certain newer thinkpads, such as many of the R61s, use ALPS dual pointing devices instead of Synaptics ones. See http://www.thinkwiki.org/wiki/UltraNav.

See also upstream bug report http://bugzilla.kernel.org/show_bug.cgi?id=8864.