This occured to me today, seemingly after no update for changes made to my laptop. I fixed in in the following way. Hope this helps someone...
What did not work: Running the latest update, installing kernel 4.8.x or 4.4.25, or any of the fixes you can find doing a google search for kubuntu 16.04 suspend. I had finally tried a commond line common pm- suspend, which caused the laptop to freeze and then freeze on booting. I have dell vostro 3500 laptop. What worked: I reinstalled the kubuntu 16.04.1 base. I have a separate /home partition so that was not effected by the reinstall (i didn't format it. just specified to mount /home in the install setup). reinstall was fast. After install finished, I also ran the update... to kernel 4.4.0-62-generic. I did not test the suspend here. I installed powernap and cpufreq, then rebooted. Later I closed the lid and the computer suspended. All set and it works fine. Not sure what was the exact problem was or the fix. -- 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
