[Wayland-bugs] [Bug 101139] Acceleration still too fast with slow and slow-medium finger movements

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101139

--- Comment #28 from Greg Reichow <gdr3941 at me.com> ---
Couple comments to answer above:

1. Not using a Hi-dpi display. Reported resolution is 1680 x 1050.

2. Exact machine is a 2011 MacBook Pro 8,2 

3. Agree the earlier patch was too fast.  I also found I did not like the
exponential acceleration from my first patch and have since switched full time
to the last patch I submitted (lowclip_patch) which has a simple linear accel
curve yet starts slower to enable precision at low speeds.  For reference, my
comfortable setting is 0.

4. I will try to get some similar video with the slow finger movement and share
back with you.

Is there a utility you have that records both physical input speed and also
resulting cursor speed on screen? I wonder if something is not happening
further up the stack from libinput and causing the differences in resulting
pointer movement?  (As I keep going through the libinput code and do not
understand why we are seeing such different results from similar input speeds
as you have shown above.)

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