Public bug reported:

Add support to the _NET_WM_PID atom which is needed by many windows
managers to correctly associate a SDL window to its process and to
related .desktop file and icon for the given host.

EWMH (Extended Window Manager Hints) is a set of conventions (basically
extending the original ICCCM, or Inter-Client Communication Conventions
Manual) on how to make X clients play along nicely especially assisting
the window manager (which is just another X client) do its job.

What this particular protocol (_NET_WM_PID) does, is add a property to
the client's window containing the process id of the client's process.
The rationale is that if the window manager detects that a particular
client does not respond, it can use the pid to kill it.

** Affects: tvtime (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1265577

Title:
  Add support to the _NET_WM_PID atom

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