I tried #1, and what happens is that when you are pinching sideways, no
scroll events are generated. When pinching vertically, scroll events are
generated. This seems to be a bug in the part of X (or kernel driver?)
that detects two finger scrolls. It is a bit tricky, though.

Currently if you hold one finger and move the other, the second finger
movement generates scrolls. This is similar to how OSX window drags and
it seems quite sensible. Unfortunately the finger motion is
indistinguishable from a pinch. The detector should do something like
this:

- when one finger is stationary and the other moves, generate scrolls according 
to the second finger
- when both fingers move in the same direction, generate scrolls
- when fingers move in opposite directions, do nothing

#2 is possibly caused by bug 839379. Please try again once the new
libgrip package gets uploaded.

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https://bugs.launchpad.net/bugs/840433

Title:
  Xorg gestures conflicts with uTouch

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