network-manager, "edit connections" + "connect" + "disconnect" functions are disabled

[Kaiser Alexander]

Some important functions in network-manager are grayed out:
* "edit connections"
* "connect"
* "disconnect"

To resolve the problem:
* When i start "nm-connection-editor" in terminal as normal user it's possible to edit all interfaces without any problems.
* When i start "users-admin" in terminal as normal user, press button "advanced settings" and enter my password, then the functions "edit connections" + "connect" + "disconnect" are possible to operate and not grayed any more untile a reboot!

I already set my user to user-group "netdev", but nothing happened.
I tryed to "dpkg-reconfigure network-manager" and "/etc/init.d/network-manager restart", but nothing happened.

------------------------
"lsb_release -rd":
Description: Ubuntu 12.04.5 LTS
Release: 12.04
------------------------
"apt-cache policy network-manager":
network-manager:
  Installiert: 0.9.4.0-0ubuntu4.4.1
  Kandidat: 0.9.4.0-0ubuntu4.4.1
  Versionstabelle:
 *** 0.9.4.0-0ubuntu4.4.1 0
        500 http://de.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
        100 /var/lib/dpkg/status
     0.9.4.0-0ubuntu3 0
        500 http://de.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
------------------------

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4.4.1
ProcVersionSignature: Ubuntu 3.2.0-77.112-generic-pae 3.2.66
Uname: Linux 3.2.0-77-generic-pae i686
ApportVersion: 2.0.1-0ubuntu17.8
Architecture: i386
Date: Wed Mar 11 20:57:48 2015
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 (20120817.3)
IpRoute:
 default via 192.168.178.1 dev eth0 proto static
 169.254.0.0/16 dev eth0 scope link metric 1000
 192.168.178.0/24 dev eth0 proto kernel scope link src 192.168.178.92 metric 1
MarkForUpload: True
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcEnviron:
 LANGUAGE=de_DE:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: yes
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2012-11-18T15:36:47
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 eth0 802-3-ethernet connected /org/freedesktop/NetworkManager/Devices/1
 wlan0 802-11-wireless unavailable /org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
 RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
 running 0.9.4.0 connected enabled disabled disabled enabled disabled

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Éric Piel (Delmic) (piel)]

I'm also affected. It looks like a regression caused by some recent update (around beginning of march 2015).

[Éric Piel (Delmic) (piel)]

Actually, looks like a duplicate of Bug #1424119.