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[Bug 1445999] [NEW] NetworkManager doesn't configure wired network connection properly

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*** This bug is a duplicate of bug 1434986 ***
    https://bugs.launchpad.net/bugs/1434986

Public bug reported:

Hello,

after installing Vivid, nearly each time when I boot my PC
NetworkManager fails to setup the (wired) connection to my router (via
DHCP) properly. That means:

- I can ping only the IP of my router.
- If I try to ping e.g. ubuntu.com, this results either in "Unknown host" or "Network is down" error.
- If I disconnect and connect again via the network-manager-applet, the connection is usually fine, so this is a workaround for me to get internet access.

This didn't happen in any previous Ubuntu version.

My home network setup is very plain, only a router that establishes the
internet connection and assigns IP adresses via DHCP to all connected
clients. The PC with Vivid running is connected via a wired link.

The informations of the report were collected when the network
connection was in faulty state (as mentioned above) in hope that it may
give any hint to what's going wrong.

Kind regards,
Jan

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: network-manager 0.9.10.0-4ubuntu15
ProcVersionSignature: Ubuntu 3.19.0-14.14-generic 3.19.3
Uname: Linux 3.19.0-14-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Apr 19 21:48:18 2015
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-04-16 (3 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150415)
IpRoute: 192.168.2.0/24 dev eth0  proto kernel  scope link  src 192.168.2.103
IwConfig:
 eth0      no wireless extensions.
 
 lo        no wireless extensions.
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
RfKill:
 
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
 NAME                       UUID                                  TYPE            TIMESTAMP   TIMESTAMP-REAL                AUTOCONNECT  READONLY  DBUS-PATH                                   ACTIVE  DEVICE  STATE      ACTIVE-PATH                                        
 Kabelnetzwerkverbindung 1  1654fa28-838d-4b95-821f-c6e0e8a6451d  802-3-ethernet  1429472871  So 19 Apr 2015 21:47:51 CEST  yes          no        /org/freedesktop/NetworkManager/Settings/0  yes     eth0    activated  /org/freedesktop/NetworkManager/ActiveConnection/0
nmcli-dev:
 DEVICE  TYPE      STATE      DBUS-PATH                                  CONNECTION                 CON-UUID                              CON-PATH                                           
 eth0    ethernet  connected  /org/freedesktop/NetworkManager/Devices/1  Kabelnetzwerkverbindung 1  1654fa28-838d-4b95-821f-c6e0e8a6451d  /org/freedesktop/NetworkManager/ActiveConnection/0 
 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'.

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug vivid

** This bug has been marked a duplicate of bug 1434986
   Not working network connection after boot

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1445999

Title:
  NetworkManager doesn't configure wired network connection properly

Status in network-manager package in Ubuntu:
  New

Bug description:
  Hello,

  after installing Vivid, nearly each time when I boot my PC
  NetworkManager fails to setup the (wired) connection to my router (via
  DHCP) properly. That means:

  - I can ping only the IP of my router.
  - If I try to ping e.g. ubuntu.com, this results either in "Unknown host" or "Network is down" error.
  - If I disconnect and connect again via the network-manager-applet, the connection is usually fine, so this is a workaround for me to get internet access.

  This didn't happen in any previous Ubuntu version.

  My home network setup is very plain, only a router that establishes
  the internet connection and assigns IP adresses via DHCP to all
  connected clients. The PC with Vivid running is connected via a wired
  link.

  The informations of the report were collected when the network
  connection was in faulty state (as mentioned above) in hope that it
  may give any hint to what's going wrong.

  Kind regards,
  Jan

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: network-manager 0.9.10.0-4ubuntu15
  ProcVersionSignature: Ubuntu 3.19.0-14.14-generic 3.19.3
  Uname: Linux 3.19.0-14-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Apr 19 21:48:18 2015
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2015-04-16 (3 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150415)
  IpRoute: 192.168.2.0/24 dev eth0  proto kernel  scope link  src 192.168.2.103
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  RfKill:
   
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-con:
   NAME                       UUID                                  TYPE            TIMESTAMP   TIMESTAMP-REAL                AUTOCONNECT  READONLY  DBUS-PATH                                   ACTIVE  DEVICE  STATE      ACTIVE-PATH                                        
   Kabelnetzwerkverbindung 1  1654fa28-838d-4b95-821f-c6e0e8a6451d  802-3-ethernet  1429472871  So 19 Apr 2015 21:47:51 CEST  yes          no        /org/freedesktop/NetworkManager/Settings/0  yes     eth0    activated  /org/freedesktop/NetworkManager/ActiveConnection/0
  nmcli-dev:
   DEVICE  TYPE      STATE      DBUS-PATH                                  CONNECTION                 CON-UUID                              CON-PATH                                           
   eth0    ethernet  connected  /org/freedesktop/NetworkManager/Devices/1  Kabelnetzwerkverbindung 1  1654fa28-838d-4b95-821f-c6e0e8a6451d  /org/freedesktop/NetworkManager/ActiveConnection/0 
   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'.

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