I'm running Arch Linux with KDE Plasma as desktop environment. Sometimes it happens that I suddenly can't use the double tap gesture on the touch-pad to make a mouse click also the two finger gestures to scroll in a window are not working. And the "Windows" key also stopped working (It is configured to open the launcher menu (like the stat menu of windows)).
Does anyone have an idea where I can start searching for this problem?
Edit: Laptop is a Schenker XMG A504 and this is a barebone Clevo W355SS.