The solution I have implemented in lp:~robert-ancell/indicator- session/lp-861171 resolves this issue by changing the session indicator to disallow shutdown or restart if more than one session is open.
This resolves the greeter issue: old: Shutdown/restart silently failed. new: Information dialog appears "You need to close all sessions before restarting" This changes the session behaviour: old, non-administrator user: PolicyKit dialog appears prompting for administrator password, on authentication system is shutdown immediately, otherwise sessions is logged out. old, administrator user: Shutdown/restart occurs immediately without any warning new: Dialog appears saying "You need to close all sessions before restarting" and gives option to log out instead. This doesn't resolve the following issues: - Pressing the power button in the greeter doesn't show a dialog - Pressing the power button in the session doesn't warn about other sessions being open (this dialog is from gnome-session). The behaviour is the same as in the old, non-administrator user case above. - This means using the mouse you cannot do a system administrator override shutdown when multiple sessions are open. I don't see this as being a major problem as system administrators have other non-GUI methods of accessing this, you can still do this by pressing the power button (see above) or holding by power cycling. I think this change is a marked improvement on what we have, and we can continue to track improvements in other bugs. Given this I will close out the other bug tasks not related to this solution. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/861171 Title: Shutdown from greeter does nothing when multiple accounts open Status in The Session Menu: Triaged Status in LightDM GTK+ Greeter: Triaged Status in OEM Priority Project: In Progress Status in OEM Priority Project precise series: In Progress Status in Unity Greeter: Triaged Status in “gnome-session” package in Ubuntu: Confirmed Status in “indicator-session” package in Ubuntu: Triaged Status in “policykit” package in Ubuntu: Confirmed Status in “unity-greeter” package in Ubuntu: Triaged Bug description: Selecting shutdown from the greeter does nothing when multiple accounts are open. This is because the lightdm user (which the greeter runs as) does not have permission to shutdown while sessions are open. Inside a normal session this would just return you to the login screen. The solution is either for the indicator to say "not allowed" or to run a PolicyKit frontend in the greeter than can get the required permissions to perform the shutdown. To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-session/+bug/861171/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
