Confirmed. Updating to Cinnamon 2.6 (using the PPA ppa:moorkai/cinnamon), and executing the commands below, solved the issue for me (after a restart).
gsettings set org.cinnamon.desktop.session settings-daemon-uses-logind true gsettings set org.cinnamon.desktop.session session-manager-uses-logind true gsettings set org.cinnamon.desktop.session screensaver-uses-logind false -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1446276 Title: Suspend not available in Cinnamon after upgrade to Ubuntu 15.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cinnamon-session/+bug/1446276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
