No. That does different things in different desktop window managers. In KDE it changes the cursor to a kill-cursor. In Cinnamon it kills and restarts the GPU

No. That does different things in different desktop window managers. In KDE it changes the cursor to a kill-cursor. In Cinnamon it kills and restarts the GPU renderer. Neither cleanly expresses what I want to do: kill a process which doesn't have a window but is owned by one which does.