What process created this X11 window?
I need to kill a process that spawned a window which seems to have no PID associated with it. At least that is what xdotool says:
~$ xdotool getwindowpid 79691780 window 79691780 has no pid associated with it.
wmctrl -lp prints
0x04c00004 0 0 N/A Window name
xprop _NET_WM_PID says
_NET_WM_PID: not found.
The solutions in What process created this X11 window? don't work. I'm out of ideas, is there really now way of telling which process owns this window?