I'm experiencing this issue after upgrading from 16.04 to 18.04 on a Thinkpad T460p.
I have set the following in /etc/systemd/logind.conf and restarted systemd-logind.service (which logged me out of my session) HandleSuspendKey=suspend HandleHibernateKey=suspend HandleLidSwitch=suspend HandleLidSwitchDocked=suspend journalctl shows "systemd-logind[20403]: Lid closed." when I close the lid, but it does not take any action other than my external monitor shutting off briefly before turning back on. pm-utils is installed. There's nothing else in the system logs related to suspend, and the power light on the laptop lid does not start pulsing like it used to do when it began to suspend. So the lid closed event is not triggering it to attempt to suspend, despite the correct logind configuration. My laptop is in a docking station and also has an external monitor connected. -- 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