Xorg used to get SIGIO on input; it's now less responsive and uses threads: http://who-t.blogspot.com/2016/09/input-threads-in-x-server.html http://who-t.blogsp

Xorg used to get SIGIO on input; it's now less responsive and uses threads: http://who-t.blogspot.com/2016/09/input-threads-in-x-server.html http://who-t.blogspot.com/2016/09/input-threads-in-x-server....