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 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
