The network manager icon is missing from the top task bar

[Sreekuttan M]

I have recently updated from 15.04 to 15.10 , now the network manager icon is missing from the top task bar and i am not able to chose wifi networks . i tried ti open the network settings and is shows an message ' The system network services are not compatible with this version'. I am able to access internet sometimes but don't know which wi-fi I am currently connected to. I have referred online and tried to downgrade the network manager but event that didn't fixed the problem so I upgraded it back to the latest.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: network-manager 1.0.4-0ubuntu5
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Oct 28 09:37:16 2015
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-10-13 (14 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
IpRoute:
 default via 192.168.1.1 dev wlan0 proto static metric 600
 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.48 metric 600
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: Upgraded to wily on 2015-10-27 (0 days ago)
nmcli-con:
 Error: command ['nmcli', '-f', 'all', 'con'] failed with exit code 1:
 (process:4223): nmcli-CRITICAL **: Error: Could not create NMClient object: Timeout was reached.
nmcli-dev:
 Error: command ['nmcli', '-f', 'all', 'dev'] failed with exit code 1:
 (process:4219): nmcli-CRITICAL **: Error: Could not create NMClient object: Timeout was reached.
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.
no_proxy: localhost,127.0.0.0/8,::1

[Launchpad Janitor (janitor)]

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

[Chris Johnston (cjohnston)]

On a fresh install, I have the same issue of the icon not appearing. I am able to access the network settings though.

[Diego (diego-giglio)]

It's happened with me on Ubuntu 15.10 on Dell XPS 15 and to resolve I install indicator-applet-complete.

[Paul White (paulw2u)]

We are sorry that we do not always have the capacity to review all reported bugs in a timely manner.

I'm setting this bug to "Incomplete" as it's not seen any activity for some time. If this is still an issue when using a maintained release of Ubuntu then please let us know otherwise this bug report can be left to expire in approximately 60 days time.

[Launchpad Janitor (janitor)]

[Expired for network-manager (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for One Hundred Papercuts because there has been no activity for 60 days.]