[Wayland-bugs] [Bug 105275] Xorg server crashes with assertion failure: Xorg: ../src/evdev-mt-touchpad-tap.c:1030: tp_tap_handle_state: Assertion `tp->tap.nfingers_down >= 1' failed.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105275

Aaron Plattner  changed:

   What|Removed |Added

 Status|RESOLVED|CLOSED

--- Comment #4 from Aaron Plattner  ---
Verified that this is fixed now. Closing.

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[Wayland-bugs] [Bug 105258] libinput crashes Xorg with SIGABRT in libinput_event_get_pointer_event

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105258

--- Comment #11 from Aaron Plattner  ---
Thanks Peter! I built from commit 12410dfba4b903108c8926d68c64ed1c7468902d and
so far, haven't been able to reproduce the problem.

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[Wayland-bugs] [Bug 102649] Mouse taps (?) detected while typing

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=102649

--- Comment #50 from Christopher Carr  ---
I'm now at 1.10.2. Will give it a spin for a couple days and let you know if I
continue to encounter the same issues.  

Rimas' " ... cursor jumped between 't' and 'ermina' ..." description describes
what I've been encountering exactly.

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[Wayland-bugs] [Bug 105407] Xorg assertion failure: Xorg: ../src/evdev-mt-touchpad-tap.c:1002: tp_tap_handle_state: Assertion `tp->tap.nfingers_down > 0' failed.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105407

--- Comment #6 from sven  ---
I get a similar assertion on 1.10.2, while 1.10.1 works fine for me. System is
a ThinkPad T420 without any external input devices.

> gnome-shell: ../libinput-1.10.2/src/evdev-mt-touchpad-tap.c:1028: 
> tp_tap_handle_state: Assertion `tp->tap.nfingers_down >= 1' failed.

And also this message by gnome-shell:
> libinput error: client bug: timer event13 middlebutton: offset negative 
> (-222ms)

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

[bugzilla-daemon]

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

--- Comment #32 from Peter Hutterer  ---
doh, sorry, hit the wrong button. Continued:

More experimenting with the lowclip patch is needed, and it needs to be
compared to the original touchpad pointer accel (for which I got a lot of
complaints for, so let's not go back to that).

I think macos may also use pressure values (well, touch sizes) for
acceleration, but I'm not 100% of that. What it definitely has is deceleration
at low speeds, that bit is missing from the lowclip patch. So the things to do
to get closer to macos (from git master):
* keep deceleration at super-low speed
* shorten the plateau
* experiment with the incline a bit more
* verify max accel is still useful once the above is there
* slightly reduce the baseline

lowclip does 2 and 5 of these already, but the baseline is too low for a
default setting. If you want it that low, you can reduce your speed in the
config. The rest, well, we'll have to experiment to see if we come to some
agreement :)

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

[bugzilla-daemon]

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

--- Comment #31 from Peter Hutterer  ---
Hooray. The good news: based on these videos, I don't think we have a libinput
*bug*, this does appear to be just a different preference. AFAICT, the movement
matches what I got with the lowclip patch, at least considering the finger
motion speed etc.

The bad news: to accommodate for this, we'd need some new pointer acceleration
profile because if *that* is your preferred behaviour, it's going to be
difficult to find a middle ground between the current and your patch. Because I
consider the fast pointer motion (like in your second video) to be
uncontrollable, I don't even get near any target when moving fast.

Adding a new profile is relatively trivial, but it opens us up to a few things:
once you have two profiles, the floodgates are open for N profiles. Anyone not
happy with the current profile will be pushing for another profile slightly
different and that's a situation I really want to avoid.

fwiw, my macos at default speed is a lot faster than the lowclip patch. And
given that we have the accel range, I think the first thing to look at is
moving that baseline. From what I can tell, the macos accel doesn't have that
same unaccelerated plateau that we have, it seems to almost contineously
linear.

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