[Wayland-bugs] [Bug 101574] Palm detection with TrackPoint buttons

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101574

--- Comment #3 from Ming-Yang Lu <op8867555 at gmail.com> ---
Sorry for the messed up patch, I did some quick & dirty changes and just want
to show the idea. Thank you for looking into it.

> proposed 25% seem a bit high for this.

Yes, evemu-record logs told me 5% should be enough.
BTW, how do you think about making the exclusion zone sizes a user specified
parameter or udev hwdb entries?
I set it to 25% because I locally modified right zone to 25% too. (logs show
that my palm often put on 20%~25% of right zone)

> One other question that comes up here is: 
> why doesn't the palm detection work during trackpoint use? 
> We ignore any touches during trackpoint use, so I'm wondering what's going on here.

I guess that I mostly stop moving trackpoint before clicking trackpoint
buttons, and my thumb finger accidentally touch the top-middle part of
touchpad. Also, libinput doesn't consider trackpoint button events as
trackpoint usage if I'm right, the palm detection didn't works well sometimes
while double-clicking.

> Also, do you use the touchpad at all? If not, turning it off is a better option.

Yes, I use both about 7:3 (trackpoint vs. touchpad). I bind a hotkey to toggle
it as a quick solution for now.


I might able to do some research and/or experiments on weekends to see is it
worth or not...
Thanks anyway.

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