Thank you for your bug report. Do you try to connect to a wifi you already used before? Is it an open one or does it require to enter credentials?
The greeter doesn't allow creating new connections but should let you activate existing ones. Here the system autoconnect to my usual wifi on boot while on the greeter, also picking the same wifi again works without error. Trying to connect to new aps trigger the error dialog, that's not new though and has always been like that in Ubuntu ** Changed in: network-manager (Ubuntu) Importance: Undecided => High ** Changed in: network-manager (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574020 Title: Can't use networkmanager from lightdm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1574020/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs