Same problem after upgrade from 14.04 to 16.04. (Dell Precision M4700) After reboot, ifconfig displays IP address and all seems well. Connecting to local IP works, but internet fails. I found another workaround by adding eth0 configuration to the /etc/network/interfaces, then, after reboot I stop the network manager: service network-manager stop then: ifdown eth0 then: ifup eth0 and internet works. So, seems indeed a DNS problem.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1434986 Title: Not working network connection after boot Status in NetworkManager: Expired Status in network-manager package in Ubuntu: Triaged 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'. To manage notifications about this bug go to: https://bugs.launchpad.net/network-manager/+bug/1434986/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp