F22 System Wide Change: Change xorg input stack to use libinput

Kevin Kofler kevin.kofler at chello.at
Sat Dec 13 01:10:18 UTC 2014

Jaroslav Reznik posted (and
> Change owner(s): Hans de Goede <hdegoede at redhat.com>

> KDE: limits itself to standard X11 mouse config interfaces, no changes
> needed.

Not true. We ship kcm_touchpad on the KDE spin, which definitely does depend
on synaptics interfaces (search for "synaptics" in:
https://projects.kde.org/projects/playground/utils/kcm-touchpad/repository/revisions/master/entry/src/backends/x11/xlibbackend.cpp ).
Anything that does not use the synaptics driver is not considered a
touchpad. And kcm_touchpad is also in the process of becoming a core part of
upstream Plasma. (It is currently in the git.kde.org playground.)

Therefore, porting kcm_touchpad (the rewritten 1.x series we currently ship,
not the old, obsolete, 0.3.x version, please make sure you look at the
correct version) is an essential requirement before we can move away from
the synaptics driver.

An additional objection I have to this change proposal is that libinput
(deliberately) only implements a small subset of the configurability of the
old drivers, and thus, if we are going to remove the old drivers entirely,
we are taking away flexibility from our users.

        Kevin Kofler

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