I believe this bug is triggered for X11 on systems which do not actually have a touchpad. I think the problem is:
Since https://github.com/KDE/plasma- desktop/commit/ce84d6ab4babc80707f4e4c1deb02cfe3ac5b7bb TouchpadConfigContainer::m_plugin is null, because TouchpadBackend::implementation() does not have m_mode properly set. setMode() is supposed to be called in XlibBackend::findTouchpad(), but this goes through the list of touchpads, which can be none, and calls setMode() on each such touchpad. So setMode() is never actually called and m_mode is (implicitly!) initialized to WaylandLibinput (since it does not get set in TouchpadBackend constructor). Then getMode() does not return any of the expected cases in isPlatformX11() branch, which means m_plugin stays a nullptr and then there is a crash in TouchpadConfigContainer::sizeHint(). -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to systemsettings in Ubuntu. https://bugs.launchpad.net/bugs/1832099 Title: systemsettings5 crashed with SIGSEGV in TouchpadConfigContainer::sizeHint() To manage notifications about this bug go to: https://bugs.launchpad.net/systemsettings/+bug/1832099/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
