[systemsettings] [Bug 397747] New: mouse speed for flat acceleration profile: unclear how to achieve untouched input

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=397747

            Bug ID: 397747
           Summary: mouse speed for flat acceleration profile: unclear how
                    to achieve untouched input
           Product: systemsettings
           Version: 5.13.4
          Platform: Archlinux Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: kcm_mouse
          Assignee: unassigned-bugs at kde.org
          Reporter: tempel.julian at gmail.com
                CC: unassigned-bugs at kde.org
  Target Milestone: ---

For libinput, you can set up
MatchIsPointer "yes"
Option "AccelProfile" "flat"
in Xorg config to achieve mouse input which should result in true untouched 1:1
mouse tracking on screen.

It's great that there are now libinput controls in Plasma system settings,
however it is unclear how to achieve the same untouched input with it as
described above.
It's obvious that the "flat" acceleration profile has to be chosen for this.
But what about the mouse speed? e.g. 5/10 is way too fast. Could 3/10 be
"untouched" speed?

On Windows, a setting of 6/11 is "untouched" speed. However, this is far from
being logical as well.
Maybe it would be clearer if a setting of "0" would be neutral, and the speed
slider allowed positive values for increased speed and negative values for
reduced speed?

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