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 Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1574120 Title: Notebook doesn't suspend when lid is closed after update to 16.04 Status in systemd package in Ubuntu: Confirmed Bug description: My notebook does not suspend after upgrading from 15.10 to 16.04. According to system settings the notebook should suspend when lid is closed but actually this does not happen. Instead it continues to run as if nothing had happened. With the previous versions of ubuntu (14.04-15.10) everything worked fine. My System: HP Pavilion dv7. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: acpi (not installed) ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CurrentDesktop: Unity Date: Sat Apr 23 23:11:15 2016 InstallationDate: Installed on 2015-10-29 (176 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) SourcePackage: acpi UpgradeStatus: Upgraded to xenial on 2016-04-22 (1 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1574120/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp