I recall this issue was a problem for Unity desktops. Although I expect a different package is to blame (please reassign).
I think it's fixed in Gnome Shell though. ** Package changed: xorg (Ubuntu) => unity (Ubuntu) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1818587 Title: Screen lock timeout not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1818587/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp