Bug 191867

Summary:	Ability to turn off involuntary extra acceleration of mouse cursor
Product:	[Applications] systemsettings	Reporter:	phoenix-1
Component:	kcm_mouse	Assignee:	Marie Loise Nolden <nolden>
Status:	RESOLVED UPSTREAM
Severity:	wishlist	CC:	ineyaa, kde2, nate
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Unlisted Binaries
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description phoenix-1 2009-05-07 02:12:54 UTC

Version:            (using KDE 4.2.2)
OS:                Linux
Installed from:    Unspecified Linux

there is no check box in the mouse options to turn off the involuntary extra acceleration as one moves the mouse faster. in windows xp there is a check box named "enhance pointer precision". it simply has to be unchecked and your mouse responds in a kind of 1:1 way. 

its not about the mouse cursor speed, but about the extra acceleration which is not of a lot of use to people which don't use the laptop fingerboard, but a mouse.

Comment 1 Dario Andres 2010-02-17 15:20:28 UTC

*** Bug 189736 has been marked as a duplicate of this bug. ***

Comment 2 Diggory Hardy 2012-11-30 08:14:39 UTC

I always used to set the 'threshold' to zero to disable acceleration. An explicit setting might be more intuitive for the GUI though.

In kubuntu 4.9.3 I've noticed that using a threshold of zero sometimes results in the mouse cursor jumping to the edge of the screen. Presumably this is some kind of bug involving incorrect activation and 'some distance divided by zero threshold = move infinite distance'?

Comment 3 Nate Graham 2022-04-26 16:59:11 UTC

These are issues in the evdev mouse driver itself, not anything we can change in KDE code. With the more modern Libinput driver, you can indeed fully disable all acceleration.