Possible Workarounds 1. Disable KGlobalAccel’s Meta handling You can run KDE without its global accelerator daemon, which frees the Meta key: "killall kglobalaccel5 && KGLOBALACCEL_DISABLE=1 startplasma-x11" …but that will break all KDE global shortcuts (like Alt+Space, Alt+Tab, etc.). It’s a heavy-handed fix, but XMonad will get the Meta key again. I have not tried this yet