[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

Peter Hutterer  changed:

   What|Removed |Added

 Resolution|--- |FIXED
 Status|NEEDINFO|RESOLVED

--- Comment #14 from Peter Hutterer  ---
ok, thanks for testing. closing as fixed with d8db6b5927f6 based comment 8,
that fix will land in 1.10.3 as well.

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #13 from Mantas Mikulėnas  ---
(In reply to Peter Hutterer from comment #12)
> So it works on master now?

Yes, master has no scrolling problems.

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #12 from Peter Hutterer  ---
So it works on master now?

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #11 from Mantas Mikulėnas  ---
Created attachment 138062
  --> https://bugs.freedesktop.org/attachment.cgi?id=138062=edit
run 2: libinput debug-events --verbose (1.10.1 good)

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #10 from Mantas Mikulėnas  ---
Created attachment 138061
  --> https://bugs.freedesktop.org/attachment.cgi?id=138061=edit
run 2: libinput debug-events --verbose (1.10.2 bad)

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #9 from Mantas Mikulėnas  ---
Created attachment 138060
  --> https://bugs.freedesktop.org/attachment.cgi?id=138060=edit
run 2: evemu-record log

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #8 from Mantas Mikulėnas  ---
(In reply to Peter Hutterer from comment #7)
> If it is between 1.10.1 and 1.10.2 and easy to reproduce, git bisecting will
> be the fastest way to identify what changed. afaict that evemu-record
> scrolls just fine, with only one motion event in the whole log.

Bisected it to 1c15e162b835 ("touchpad: add a TOUCH_MAYBE_END state").

But I see that in master you've already fixed it by d8db6b5927f6 ("touchpad:
end hovering touches in maybe_end_touch").

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

Peter Hutterer  changed:

   What|Removed |Added

 CC||peter.hutte...@who-t.net
 Status|NEW |NEEDINFO

--- Comment #7 from Peter Hutterer  ---
If it is between 1.10.1 and 1.10.2 and easy to reproduce, git bisecting will be
the fastest way to identify what changed. afaict that evemu-record scrolls just
fine, with only one motion event in the whole log.

I'll need a libinput debug-events --verbose output too please, that'll show if
the pressure sensitivity is getting in the way.

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #6 from Anssi Puhakka  ---
(In reply to Mantas Mikulėnas from comment #0)
> I upgraded from 1.10.1 to 1.10.2, and it stopped recognizing about half of
> my two-finger-scroll attempts, treating them as plain pointer movements. (I
> can even run the old and new `libinput debug-gui` side-by-side, and the
> former recognizes all my scrolls while the latter misses nearly half of
> them.)
> 
> This is on a full-multitouch touchpad (Synaptics) in RMI4 mode.
> 
> libinput 1.10.1 / 1.10.2
> linux 4.15.7
> Synaptics s3203 (RMI4 mode)

Exactly the same issues on an Apple Internal Trackpad (bcm5974) after upgrading
to 1.10.2.

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #5 from Mantas Mikulėnas  ---
(In reply to Mantas Mikulėnas from comment #4)
> (In case it's relevant, RMI4 on this laptop is affected by bug 100436, so it
> might just be garbage-in, garbage-out...)

Hmm, I just remembered I can test the legacy PS/2 mode using
'modprobe.blacklist=i2c_hid'. (Fortunately 4.15.x supports PS/2 fallback –
older kernels didn't.)

With the touchpad in PS/2 mode, libinput 1.10.2 missed only 2 scrolls out of
nearly a hundred.

So yes, looks like the problem is definitely caused (or at least worsened) by
the kernel RMI4 bugs.

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #4 from Mantas Mikulėnas  ---
(In case it's relevant, RMI4 on this laptop is affected by bug 100436, so it
might just be garbage-in, garbage-out...)

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

--- Comment #3 from Mantas Mikulėnas  ---
Created attachment 138011
  --> https://bugs.freedesktop.org/attachment.cgi?id=138011=edit
libinput debug-events 1.10.1 log (good)

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[Wayland-bugs] [Bug 105447] Two-finger scrolling broken in 1.10.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=105447

Bug ID: 105447
   Summary: Two-finger scrolling broken in 1.10.2
   Product: Wayland
   Version: unspecified
  Hardware: Other
OS: All
Status: NEW
  Severity: normal
  Priority: medium
 Component: libinput
  Assignee: wayland-bugs@lists.freedesktop.org
  Reporter: graw...@gmail.com

I upgraded from 1.10.1 to 1.10.2, and it stopped recognizing about half of my
two-finger-scroll attempts, treating them as plain pointer movements. (I can
even run the old and new `libinput debug-gui` side-by-side, and the former
recognizes all my scrolls while the latter misses nearly half of them.)

This is on a full-multitouch touchpad (Synaptics) in RMI4 mode.

libinput 1.10.1 / 1.10.2
linux 4.15.7
Synaptics s3203 (RMI4 mode)

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