Bug 481185

Summary:	Upon upgrade from KDE 5 to KDE 6 RC2, my mouse sensitivity was massively increased
Product:	[Applications] systemsettings	Reporter:	briguy992
Component:	kcm_mouse	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	natalie_clarius, nate
Priority:	NOR	Keywords:	qt6
Version:	5.93.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description briguy992 2024-02-10 20:26:34 UTC

SUMMARY
I upgrade from KDE 5 to KDE 6 RC2, and upon upgrade the first thing I noticed was my mouse sensitivity seemed massively faster to the point of being unusable (2-3x faster at least). It was very jarring and my first task on upgrade needed to be changing the sensitivity to how it felt before.

NOTE: I do not know the values before and after to know if the sensitivity values needed to be different, or if it just felt different due to some KDE 6 change in behavior. 

STEPS TO REPRODUCE
1. Be on KDE 5 with a mouse sensitivity that you set and feels comfortable
2. Upgrade to KDE 6 RC2
3. Notice the mouse sensitivity has increased massively

OBSERVED RESULT
Mouse sensitivity increases massively upon upgrade to KDE 6 RC2

EXPECTED RESULT
The mouse sensitivity should feel functionally identical when doing an upgrade, as this feels like a regression when doing an upgrade and gives an immediate jarring feeling to using KDE 6.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6
(available in About System)
KDE Plasma Version: 5.93.0
KDE Frameworks Version: 5.249.0
Qt Version: 6.7.0

ADDITIONAL INFORMATION
Kernel 6.7.4-arch1-1

Unfortunately I do not know what my mouse sensitivity values were, so I'm unsure if the sensitivity was reset, or if there's some other fundamental change in KDE 6 that makes the mouse feel significantly faster.

Comment 1 Nate Graham 2024-03-25 02:01:35 UTC

Were you on X11 in Plasma 5, and then upgrading to Plasma 6 got you the Wayland session by default? Especially if you use any screen scaling? If so, that probably explains it, as the settings are different and sensitivity is scaled on Wayland (as it always should have been) but not on X11, which was always a bug.

Comment 2 briguy992 2024-03-25 02:08:02 UTC

(In reply to Nate Graham from comment #1)
> Were you on X11 in Plasma 5, and then upgrading to Plasma 6 got you the
> Wayland session by default? Especially if you use any screen scaling? If so,
> that probably explains it, as the settings are different and sensitivity is
> scaled on Wayland (as it always should have been) but not on X11, which was
> always a bug.

Yup exactly. I believe I am using scaling? I'm at a different PC and can't check. At least my resolution was 2560x1440 so presumably yes. I think that explains what happened.

Comment 3 Nate Graham 2024-03-25 02:17:30 UTC

Cool, I had a feeling. In that case the bug you've been living with (and working around by setting the sensitivity really high) all these years has been fixed, so you don't need to use that workaround anymore!