Using lightdm 1.10.2, I tested setting allow-user-switching to false. Now, every time I log out of a Unity session I get the "The system is running in low-graphics mode" window. None of the options really help - I have to "start lightdm" from console to get to the greeter.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1350357 Title: Support disabling of user switching per seat Status in Light Display Manager: Fix Released Status in Light Display Manager 1.10 series: Fix Released Status in “lightdm” package in Ubuntu: Fix Released Status in “lightdm” source package in Trusty: Confirmed Status in “lightdm” source package in Utopic: Fix Released Bug description: Let me start by saying it's possible I'm missing some subtleties here, and if so, I'd be happy to get a more detailed explanation. In LightDM 1.10.1 (Trusty), unity seats are forced to enable user switching (in seat-unity.c). However, I think this is something that should be configurable in the display manager. In a public computing environment, fast-user-switching is undesirable, as it interferes with serial re-usability and various cleanup tasks. Most public computing labs want to maintain a 1-1 relationship between individuals and workstations, and a workstation should either be in use by one user, or not in use at all. In the past, our site has accomplished this in various desktop environment configurations (such as the org.gnome.desktop.lockdown gsettings, etc). Unfortunately, most of these settings are ignored in Unity (I have filed separate bugs about those). Obviously, there are workarounds, including stealing all the other VTs, or playing stupid D-Bus games, or wrapping X. Currently, our preferred ("preferred") solution is to have our custom greeter check logind and refuse to do anything other than unlock the existing session if a user is already logged in on an X seat, but that's not ideal, because you still end up with a second greeter running, and in fact that becomes the primary greeter when the original user logs out. That having been said, I believe it is the system administrator's prerogative to dictate that there shall be one and only one seat available on any given workstation, and instruct LightDM not to spawn any additional ones. It would be great if this was added in future releases. Alternatively, if that's not possible because of Unity design, it would be great if there was a way for a greeter to say to lightdm "I'm done, this seat is shutting down, switch back to an original session." (And obviously, doing that if there is no other session to switch to would be an error). To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1350357/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
