Ctrl+Z

x The TTY driver turns Ctrl+Z into a stop signal for the
  foreground job.
  Nothing after the TTY driver receives Ctrl+Z.

Route
  1  Remapper      v  none detected
  2  Compositor    -  not inspected
  3  Terminal      -  not inspected
  4  TTY driver    x  terminal signal handling; interprets
                      byte 0x1a as VSUSP (SIGTSTP)
  5  Input method  -  not reached
  6  Multiplexer   -  not reached
  7  Shell         -  not reached

More  whykey ctrl+z -v
