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[Bug 1434986] Re: Not working network connection after boot

 

This is happening for me as well on Ubuntu 15.04 (upgraded from 14.04
through 14.10).

Interestingly, i changed my wifi-card since first experiencing this, but
it did not help. It had an rt2x00 driven USB adapter before and now run
an Intel based PCIe card with exactly the same behaviour: Directly after
boot, NM shows a connection but i cannot visit any website. I have to
manually disconnect and connect again to get internet access.

My network adapter:
05:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)

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https://bugs.launchpad.net/bugs/1434986

Title:
  Not working network connection after boot

Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  Directly after boot the network connections are not working. I am
  connected and have an IP address, but I cannot establish a connection
  with any Internet server.

  I have the impression it is related to thee DNS lookup, which waits
  forever for a result.

  Cycling the connection (disconnect->reconnect) seems to fix the
  problem for some time.

  I am reporting this against network-manager, but I am not sure if it is directly in network manager or if it is systemd related.
  With 14.10 everything worked perfectly.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: network-manager 0.9.10.0-4ubuntu11
  ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
  Uname: Linux 3.19.0-9-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.16.2-0ubuntu4
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sun Mar 22 12:38:26 2015
  EcryptfsInUse: Yes
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2015-01-30 (50 days ago)
  InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  IpRoute:
   default via 192.168.1.1 dev eth0  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 192.168.1.26 
   192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.29
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: network-manager
  UpgradeStatus: Upgraded to vivid on 2015-03-19 (3 days ago)
  modified.conffile..etc.NetworkManager.NetworkManager.conf: [modified]
  mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2015-02-16T00:14:50.662693
  nmcli-dev:
   DEVICE  TYPE      STATE      DBUS-PATH                                  CONNECTION                 CON-UUID                              CON-PATH                                           
   eth0    ethernet  connected  /org/freedesktop/NetworkManager/Devices/2  Kabelnetzwerkverbindung 1  4a581685-6002-4401-a993-49aa649667eb  /org/freedesktop/NetworkManager/ActiveConnection/4 
   wlan0   wifi      connected  /org/freedesktop/NetworkManager/Devices/1  4A616E7320574C414E         f45aa3a7-fb44-41b7-a02a-ea9720d79414  /org/freedesktop/NetworkManager/ActiveConnection/3 
   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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