Proposed fix:
--- a/kcms/touchpad/src/kcm/touchpadconfigcontainer.cpp 2019-06-07
18:08:11.000000000 +0200
+++ b/kcms/touchpad/src/kcm/touchpadconfigcontainer.cpp 2019-06-18
14:20:11.853007246 +0200
@@ -42,7 +42,7 @@
if (backend->getMode() == TouchpadInputBackendMode::XLibinput) {
m_plugin = new TouchpadConfigLibinput(this, backend);
}
- else if (backend->getMode() == TouchpadInputBackendMode::XSynaptics) {
+ else {
m_plugin = new TouchpadConfigXlib(this, backend);
}
} else if (KWindowSystem::isPlatformWayland()) {
diff -urN a/kcms/touchpad/src/touchpadbackend.h
b/kcms/touchpad/src/touchpadbackend.h
--- a/kcms/touchpad/src/touchpadbackend.h 2019-06-07 18:08:11.000000000
+0200
+++ b/kcms/touchpad/src/touchpadbackend.h 2019-06-18 14:18:57.915432036
+0200
@@ -25,9 +25,10 @@
#include <QVariantHash>
enum class TouchpadInputBackendMode {
- WaylandLibinput = 0,
- XLibinput = 1,
- XSynaptics = 2
+ Unset = 0,
+ WaylandLibinput = 1,
+ XLibinput = 2,
+ XSynaptics = 3
};
class Q_DECL_EXPORT TouchpadBackend : public QObject
@@ -35,7 +36,7 @@
Q_OBJECT
protected:
- explicit TouchpadBackend(QObject *parent) : QObject(parent) {}
+ explicit TouchpadBackend(QObject *parent) : QObject(parent),
m_mode(TouchpadInputBackendMode::Unset) {}
void setMode(TouchpadInputBackendMode mode);
public:
which will create the Synaptics backend as m_plugin in case of no touchpad (as
in Plasma 5.15), which will show a message 'No touchpad found' and disable all
controls.
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https://bugs.launchpad.net/bugs/1832099
Title:
systemsettings5 crashed with SIGSEGV in
TouchpadConfigContainer::sizeHint()
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