Public bug reported: The code that generates the sleep/suspend use org.freedesktop.PowerManagement which is deprecated and the only remaining implementation appears to be in KDE. So it won't be working on other DE's.
This should be using logind now. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.8 ProcVersionSignature: Ubuntu 4.4.0-16.32-generic 4.4.6 Uname: Linux 4.4.0-16-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu1 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: GNOME Date: Tue Apr 5 14:46:44 2016 InstallationDate: Installed on 2012-09-23 (1290 days ago) InstallationMedia: Ubuntu GNOME Remix 12.10 "Quantal Quetzal" - Alpha amd64(20120922) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: ubuntu-release-upgrader UpgradeStatus: No upgrade log present (probably fresh install) VarLogDistupgradeTermlog: ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1566141 Title: sleep inhibitor uses deprecated interface To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1566141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs