Bug 457556

Summary:	Honor high resolution scrollwheels
Product:	[Plasma] kwin	Reporter:	Naomi Calabretta <tony0000.ac>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	wishlist	CC:	andre.vmatos, gudvinr+kde, kde, lemmyg, nate
Priority:	NOR
Version:	5.25.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:	https://invent.kde.org/plasma/kwin/-/commit/c14734087866ee002e129bcaffe364a8b4036112?merge_request_iid=3034	Version Fixed In:	5.27.0
Sentry Crash Report:

Description Naomi Calabretta 2022-08-06 16:08:08 UTC

SUMMARY
Wayland 1.21 introduced high-res scroll events to wl_pointer[1]. It would be nice to have KWin updated so that applications get the smooth scrolling treatment (as it is with Plasma on X11 -- so it's feature parity, really).


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Artix Linux rolling/KDE Plasma 5.25.4
(available in About System)
KDE Plasma Version: 5.25.4
KDE Frameworks Version: 5.96.0
Qt Version: 5.15.5

ADDITIONAL INFORMATION
[1]: https://lists.freedesktop.org/archives/wayland-devel/2022-June/042268.html

Comment 1 gudvinr+kde 2023-02-22 12:47:43 UTC

So, how is this supposed to work?

In kwin debug console you can see micro steps but apps do not seem to care.
Firefox still jumps only on full step. Same with KDE apps like kate or okular.

Comment 2 Vlad Zahorodnii 2023-02-22 14:22:30 UTC

(In reply to gudvinr+kde from comment #1)
> So, how is this supposed to work?
> 
> In kwin debug console you can see micro steps but apps do not seem to care.
> Firefox still jumps only on full step. Same with KDE apps like kate or
> okular.

It requires Qt and GTK support too.

Qt will support high resolution scrolling in 6.5. No idea about GTK