Comment 25 for bug 1574120

rb@bluejay:~/git/mps/code$ systemd-inhibit
     Who: NetworkManager (UID 0/root, PID 812/NetworkManager)
    What: sleep
     Why: NetworkManager needs to turn off networks
    Mode: delay

     Who: rb (UID 1000/rb, PID 1589/unity-settings-)
    What: sleep
     Why: GNOME needs to lock the screen
    Mode: delay

     Who: rb (UID 1000/rb, PID 1589/unity-settings-)
    What: handle-power-key:handle-suspend-key:handle-hibernate-key
     Why: GNOME handling keypresses
    Mode: block

     Who: Unity (UID 1000/rb, PID 1594/compiz)
    What: sleep
     Why: Unity needs to lock the screen
    Mode: delay

4 inhibitors listed.

Note: Closing the lid does switch off the display, but doesn't suspend the machine.

Here is the tail of the output of journalctl at the time I closed and opened the lid.

Apr 26 23:21:13 bluejay kernel: atkbd serio0: Unknown key pressed (translated set 2, code 0xd8 on isa0060/serio0).
Apr 26 23:21:13 bluejay kernel: atkbd serio0: Use 'setkeycodes e058 <keycode>' to make it known.
Apr 26 23:21:13 bluejay kernel: atkbd serio0: Unknown key released (translated set 2, code 0xd8 on isa0060/serio0).
Apr 26 23:21:13 bluejay kernel: atkbd serio0: Use 'setkeycodes e058 <keycode>' to make it known.
Apr 26 23:21:14 bluejay systemd-logind[828]: Lid closed.
Apr 26 23:21:17 bluejay systemd-logind[828]: Lid opened.
Apr 26 23:21:22 bluejay sudo[8534]: rb : TTY=pts/6 ; PWD=/home/rb/git/mps/code ; USER=root ; COMMAND=/bin/journalctl -b
Apr 26 23:21:22 bluejay sudo[8534]: pam_unix(sudo:session): session opened for user root by (uid=0)