[Wayland-bugs] [Bug 98839] Somehow conditionalize hysteresis (hardware black/whitelist, device property introspection, user-exposed setting, etc)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98839

--- Comment #20 from Tom Vincent <freedesktop at tlvince.com> ---
I'm experiencing the same issue as described here with hysteresis. In the long
term, a knob per bug 94379, comment 29 is needed. In the meantime, I've been
having a look at restoring the "PRECISE_TOUCHPAD" flag to disable hysteresis.

(In reply to Peter from comment #12)

> Have a look at commit afdcaf50157c0a76389740885bed3719b758dc37, that provides > a blueprint for the patch required to mark your touchpad as one that doesn't > require hysteresis. I'm willing to give in here to see whether we'll see any > pushback (see 27078b2). Happy to review and merge a patch for this.

I'd be interested to hear your thoughts on:
https://github.com/tlvince/libinput/compare/tlvince:7272696...tlvince:9259143

Note, this doesn't restore the tag on Apple and Lenovo *40 devices. I'm aware
hysteresis has been enabled/reverted a few times (e.g.
48473994c8e60189356feae7b7eae25288e5ac28) and I agree maintaining a list of
device-specific flags is unscalable, but this is a real issue[1] for some users
and this seems the easiest way to do it _right now_ (it could be again removed
once suitable user-facing configuration is in place).

[1]:
https://www.reddit.com/r/archlinux/comments/52makr/fyi_libinput_works_much_better_than_synaptics_on/dadogfd/?st=j12aqwqi&sh=ec733a11
https://bbs.archlinux.org/viewtopic.php?id=224643

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