The problem persists after sorting the oddity with the unity-settings- daemon, which appears to have been a one-off problem. (See bug #1577906 for more detail.)
Now I find that suspend only works if "HandleLidSwitchDocked=suspend" is in logind.conf. Without that I return to the bug condition. In the bug condition suspend works fine from the session indicator. neilw@NWPS-LAP:~$ systemd-inhibit Who: neilw (UID 1000/neilw, PID 1558/unity-settings-) What: handle-power-key:handle-suspend-key:handle-hibernate-key Why: GNOME handling keypresses Mode: block Who: NetworkManager (UID 0/root, PID 2267/NetworkManager) What: sleep Why: NetworkManager needs to turn off networks Mode: delay Who: Telepathy (UID 1000/neilw, PID 1797/mission-control) What: shutdown:sleep Why: Disconnecting IM accounts before suspend/shutdown... Mode: delay Who: neilw (UID 1000/neilw, PID 1558/unity-settings-) What: sleep Why: GNOME needs to lock the screen Mode: delay Who: Unity (UID 1000/neilw, PID 1566/compiz) What: sleep Why: Unity needs to lock the screen Mode: delay 5 inhibitors listed. ** Attachment added: "As requested in post #22" https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1574120/+attachment/4655927/+files/journal.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574120 Title: Notebook doesn't suspend when lid is closed after update to 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1574120/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs