Comment # 6
on bug 105896
from Peter Hutterer
This line here indicates that it is the property that changed:
Property 'libinput Accel Profile Enabled' changed.
libinput Accel Profile Enabled (323): 1, 0
which means it's not a libinput bug but either a bug in the xf86-input-libinput
driver or a bug in the desktop environment. I don't know if KDE touches that
property tbh. To narrow this down, install xterm and run a plain X session
without KDE, just run xinit (note: you won't have a window manager running,
keep it that way please). Once you see the xterm, run the same watch-props
command, plug the mouse in and check the output. Same behaviour?
If so, this is a xf86-input-libinput driver bug, otherwise it's a KDE issue. Or
whatever else could possibly touch that property.
That X server wills shut down once the xterm instance exits.