On X11, it creates a dead pixel on the left edge which interferes with
left panels, the left-nost widget on bottom and top panels, and scroll
events on the left-most pixel in various apps.
It works properly on Wayland, but unfortunately turning it off by
default only on X11 but not Wayland is not easily doable. So let's turn
it off by default everywhere.
BUG: 387775
FIXED-IN: 5.21
Summary:
Also manage KCModule states (isSaveNeeded and isDefaults)
BUG: 405573
Test Plan:
* exec kcmshell5 kwintouchscreen
* In an edge, select action Present windows - All desktops, then apply
* close and reopen
* Should display action Present windows - All desktops in the previously selected edge.
* Do same test with Present windows - current desktop
Reviewers: #kwin, ervin, bport, meven, zzag
Reviewed By: #kwin, ervin, meven, zzag
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D27862
