(1) Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/0' failed in libnm-glib.

[Christopher M. Penalver]

While attempting to connect to an SSID for the first time, it fails, and I consistently get:
(1) Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/0' failed in libnm-glib.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: network-manager 0.9.10.0-4ubuntu11
ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
Uname: Linux 3.19.0-10-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.16.2-0ubuntu5
Architecture: amd64
CurrentDesktop: GNOME-Flashback:Unity
Date: Sun Mar 29 23:08:37 2015
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-03-29 (0 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
IpRoute:
 default via 192.168.1.1 dev wlan0 proto static metric 1024
 169.254.0.0/16 dev wlan0 scope link metric 1000
 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.2
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH
 wlan0 wifi connected /org/freedesktop/NetworkManager/Devices/4 www.ubuntu.com 71c36534-c491-4479-aa91-9238b10f3945 /org/freedesktop/NetworkManager/ActiveConnection/1
 wlan1 wifi disconnected /org/freedesktop/NetworkManager/Devices/2 -- -- --
 eth0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/1 -- -- --
 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0 -- -- --
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.

[Krupier (krupier123)]

Same here except of my connection dies unexpectably. Cannot recreate it, just happens. Reconnecting brought this:
(1) Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/61' failed in libnm-glib. Note the number.
Restarting Network Manager makes the system work VERY slow.

[Faisal Aslam (faisalaslam6309)]

I get the same error but I am trying to connect a DSL connection. I experience this problem in Ubuntu Mate and Xubuntu.

[Bram Stolk (b-stolk)]

I'm hitting this after moving to 15.04 while 14.04 was fine.
In the dialog window:
(1) Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/6' failed in libnm-glib.
In /var/log/syslog:
(nm-applet:1417): libnm-glib-WARNING **: async_got_type: could not read properties for /org/freedesktop/NetworkManager/ActiveConnection/5: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist

[Tkess (tkess)]

Same error on wire connection. Is there any temporary known work-around?

[David Baumann (davidbaumann)]

I would really appreciate a workaround, too, as I cannot connect with my mobile router!

[Guido I (guidoweb)]

I'm hitting this bug too, and so far working around it by going to Edit connections -> Edit the network you want to connect to -> manually input the WPA2 password in the Wi-Fi Security tab -> Save, then it connects without problems.

[Alexandr (zalitko)]

Guidi I, thanks a lot mate!!

[micsu (micsu-z)]

Same error for me, when trying to connect to a new DSL connection.
The workaround mentioned in #8 does not work for me. :(
Debian 8.1 Stable
network-manager version 0.9.10.0

[Daan Wilmer (o-daan-d)]

I have the same problem that Krupier (krupier123) has: connection dies unexpectedly, and I am unable to reconnect using the Network Manager. Restarting through `service network-manager restart` brings the system down on its knees, until I stop the service.

However, I found a workaround: when I suspend my laptop and wake it up again, the connection is up again.

[drwt (6lobe)]

It'd be great if this got fixed. Its getting pretty tiresome to constantly have to reboot laptop and lose data.

Suspending doesnt fix this for me. I wish it would so I wouldnt lose anything.

[Vincent Thiele (vincentthiele)]

Same bug on wily

[Kike (mesaprop)]

Also suffering this issue. Same as Daan Wilmer and Krupier123. Specially if torrent is on (probably excessive connections) but also using browser as usual. Connection stops (even appears connected but can't access the web) then sometimes restarting connection works until a point when restarting the system is the only solution. It's very annoying. Please do something about it!!!

[johannes lindgren (johannes-lindgren)]

Experiencing the same thing as krupier123 on Ubuntu 14.10. I have tried all workarounds mentioned here. Reinstalling NetworkManager fixes the issue for a couple of minutes, then the connection dies again. Rebooting, suspending, setting managed=true in NetworkManager.conf does not do anything.

[lysergik (kbalog313)]

Yep, suspending works for a while, only temporary fixes so far :(
really annoying.