https://bugs.launchpad.net/lubuntu-software- center/+bug/1424362/comments/13 is a workaround that also seems to fix this issue. So starting the gnome polkit agent to allow for graphical password authentatication is likely to fix this as well.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-system-tools in Ubuntu. https://bugs.launchpad.net/bugs/1429531 Title: users-admin cannot create a new user in Lubuntu Status in gnome-system-tools package in Ubuntu: Confirmed Bug description: users-admin cannot create a new user in Lubuntu. Nothing happens when I click on '+ Add user' I have tried from the menu and after that from a terminal window without and with [gk]sudo -o- It works to add a user with the CLI tool sudo adduser newuser ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: gnome-system-tools 3.0.0-4ubuntu2 ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0 Uname: Linux 3.19.0-7-generic x86_64 ApportVersion: 2.16.2-0ubuntu1 Architecture: amd64 CurrentDesktop: LXDE Date: Sun Mar 8 08:56:58 2015 InstallationDate: Installed on 2015-03-08 (0 days ago) InstallationMedia: Lubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150307) SourcePackage: gnome-system-tools UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-system-tools/+bug/1429531/+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