[Wayland-bugs] [Bug 96556] Clevo W330AU multi-touch support

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96556

Peter Hutterer <peter.hutterer at who-t.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |NOTABUG
             Status|NEEDINFO                    |RESOLVED

--- Comment #5 from Peter Hutterer <peter.hutterer at who-t.net> ---
This is the key here:
#   Property  type 3 (INPUT_PROP_SEMI_MT)

Semi-mt touchpads are those that can only provide us a bounding box of all 
fingers rather than the actual position of each finger. In doing so, the
resolution drops to about half whenever a second finger is on the touchpad (the
third finger doesn't provide any position, it's just a bit that there is a
third finger down). We had gestures for a while on semi-mt devices but because
of the resolution issues we removed it, these devices simply aren't capable of
enough precision to make gesture detection reliable. sorry.

so libinput not handling a three-finger gesture on these devices is correct
behaviour.

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