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
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 desktop. session session- manager- uses-logind true desktop. session screensaver- uses-logind false
gsettings set org.cinnamon.
gsettings set org.cinnamon.