Hi,

When I run evince I find it working as designed. It's not optimal yet,
though. Here's a description of how it works for me:

1. Start scrolling with a two touch drag
2. Evince hesitates for a half second
3. Evince then begins scrolling as appropriately, including the scrolled 
distance during the hesitation

The hesitation is due to the system waiting to see if a gesture has been
recognized or not. In this case, the two gestures available are pinch to
zoom and rotate. Once these gestures have been discarded as
possibilities, scrolling can continue.

We currently can't get around the hesitation today because of the
architecture of scrolling and gestures in X and uTouch. We will always
have this hesitation until we can get smooth scrolling through two touch
drag gestures. The simplest way to resolve this is to enable smooth
scrolling through the toolkit. We are looking into this, but we don't
have an estimate of when it will land yet.

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https://bugs.launchpad.net/bugs/874660

Title:
  Two finger scrolling works poorly - utouch to blame

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