A few months ago, I submitted a bug for an intermittant problem I'm
experiencing whereby the "Windows" key stops acting as a modifier key
under KDE (see bug 155002 -
https://bugs.kde.org/show_bug.cgi?id=155002).

This is still driving me nuts. Can anyone suggest how I might begin to
go about narrowing down what is causing the problem? I was thinking if I
knew the process that handles the keyboard under KDE I could simply try
killing or restarting this to see if it solves the problem without
having to go through a logout or reboot cycle.

Essentially, I want to gather more information to add into the ticket
(in the hope of a future resolution), but don't know what other
information I should supply or how to proceed.

Any suggestions appreciated.

Ian.