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Bug#861652: task-kde-desktop: Speed of the mouse pointer does not depend on the speed settings in the system settings of the kde.

I've been searching for more information about this bug, and I've found
a bug report at RedHat that probably is connected to this one:
https://bugzilla.redhat.com/show_bug.cgi?id=1227522 . This had led me to
another bug report, this time, in KDE:
https://bugs.kde.org/show_bug.cgi?id=350688 .

So it seems to be an upstream bug between KDE Plasma and LibInput. As
a workaround, one can use the "xinput" command to set the acceleration
directly from the command line:

  xinput set-prop <device_id> 276 <value>

276 is the ID of the property "libinput Accel Speed". For example, in my
case, to set the acceleration to the maximum (1.0), I've had to do this:

  xinput set-prop 12 276 1.0

Use this command to list the connected devices:

  xinput list

Use this command to know the current properties of a specific device:

  xinput list-props <device_id>

Another workaround is to just install "xserver-xorg-input-evdev" and
uninstall "xserver-xorg-input-libinput". In my opinion, for now, EvDev
suits my needs much better than LibInput.


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