The problem with the coordinate transform matrix not working is solved
by this patch: http://patchwork.freedesktop.org/patch/12471/

These touchscreens sometimes only send one axis if the other axis hasn't
changed.  The server would take the new untransformed X axis sent by the
screen and the saved, *post-transform*, value of the Y axis, and then
apply the transform to that.  The patch fixes it to take the new X axis
and a saved pre-tranform Y axis and transform that.

I can also confirm that emulate third button appears to be totally non-
functional with an atmel touchscreen.

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https://bugs.launchpad.net/bugs/1084938

Title:
  evdev settings doesn't work at all

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