I have a similar problem on 18.04 on a Lenovo V330. Suspend works fine without external monitor, but no matter what I do it's inhibited when its connected. I want it to suspend always.
$ grep -i lid /etc/systemd/logind.conf #HandleLidSwitch=suspend HandleLidSwitchDocked=suspend #LidSwitchIgnoreInhibited=yes $ dconf read /org/gnome/settings-daemon/plugins/power/lid-close-suspend-with-external-monitor true $ systemd-inhibit --list --mode=block <snip> Who: gdm (UID 121/gdm, PID 5935/gsd-power) What: handle-lid-switch Why: Multiple displays attached Mode: block Who: gaute (UID 1000/gaute, PID 1713/gsd-power) What: handle-lid-switch Why: Multiple displays attached Mode: block Only the second of these goes away when monitor is unplugged, but lid close still works. This is possibly due to a bug in gsd-power which is mentioned in the following guthub issues. https://github.com/systemd/systemd/issues/7137 https://github.com/linuxmint/cinnamon-settings-daemon/issues/224 https://github.com/linuxmint/Cinnamon/issues/7347 ** Bug watch added: github.com/linuxmint/cinnamon-settings-daemon/issues #224 https://github.com/linuxmint/cinnamon-settings-daemon/issues/224 ** Bug watch added: github.com/linuxmint/Cinnamon/issues #7347 https://github.com/linuxmint/Cinnamon/issues/7347 -- 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