Comment 64 for bug 754000

On Precise, the uTouch gesture stack sits on the client side of X. For it to work properly, touch events need to be emitted. Unfortunately, if the X synaptics input module is listening for three touch gestures (three touch tap for middle click, for example), this will prevent the X server from sending touch events, which blocks uTouch gestures.

We decided to disable three touch gestures in X synaptics by default. It is still possible to enable them by using xorg.conf or the synclient/xinput utilities. For example:

$ synclient TapButton3=2

will enable three-tap to middle click emulation.