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[Chelmite <1452119@xxxxxxxxxxxxxxxxxx>]

See the attached /var/log/syslog. Configuration of ethernet fails:

May 22 15:10:33 bonobo NetworkManager[1053]: <error> [1432332633.395458] [platform/nm-linux-platform.c:1714] add_object(): Netlink error adding 10.0.0.0/22 via 10.0.1.1 dev eth0 metric 100 mss 0 src user: Unspecific failure
May 22 15:10:33 bonobo NetworkManager[1053]: <info> Activation (eth0) Stage 5 of 5 (IPv4 Commit) failed
May 22 15:10:33 bonobo NetworkManager[1053]: <info> (eth0): device state change: ip-config -> failed (reason 'config-failed') [70 120 4]
May 22 15:10:33 bonobo NetworkManager[1053]: <warn> Activation (eth0) failed for connection 'Auto Ethernet'
May 22 15:10:33 bonobo NetworkManager[1053]: <info> Activation (eth0) Stage 5 of 5 (IPv4 Commit) complete.
May 22 15:10:33 bonobo NetworkManager[1053]: <info> (eth0): device state change: failed -> disconnected (reason 'none') [120 30 0]
May 22 15:10:33 bonobo NetworkManager[1053]: <info> (eth0): deactivating device (reason 'none') [0]


** Attachment added: "syslog file"
   https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1452119/+attachment/4402722/+files/syslog

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https://bugs.launchpad.net/bugs/1452119

Title:
  ethernet interface broken after upgrade from 14.10 to 15.04

Status in network-manager package in Ubuntu:
  New

Bug description:
  After upgrading, the ethernet connection doesn't connect.
  If I run ifconfig with the ethernet unplugged, I get:
  % ifconfig eth0
  eth0      Link encap:Ethernet  HWaddr 00:90:f5:c7:69:b7  
            UP BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:293047 errors:0 dropped:1 overruns:0 frame:0
            TX packets:341795 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000 
            RX bytes:75754614 (75.7 MB)  TX bytes:77108082 (77.1 MB)
            Interrupt:38 

  With the ethernet plugged in, I get:
  %  ifconfig
  eth0      Link encap:Ethernet  HWaddr 00:90:f5:c7:69:b7  
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:293286 errors:0 dropped:1 overruns:0 frame:0
            TX packets:342195 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000 
            RX bytes:75797513 (75.7 MB)  TX bytes:77249665 (77.2 MB)
            Interrupt:38 

  The differences in the outputs are that (a) RUNNING, (b) packets
  received and transmitted after plugging it in, although no ip address
  is reported.

  % lspci -nnk | grep -iEA3 "(ethernet|network)"
  03:00.0 Ethernet controller [0200]: JMicron Technology Corp. JMC250 PCI Express Gigabit Ethernet Controller [197b:0250] (rev 05)
          Subsystem: CLEVO/KAPOK Computer Device [1558:7100]
          Kernel driver in use: jme
  03:00.1 System peripheral [0880]: JMicron Technology Corp. SD/MMC Host Controller [197b:2392] (rev 90)
  --
  04:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6230 [Rainbow Peak] [8086:0091] (rev 34)
          Subsystem: Intel Corporation Centrino Advanced-N 6230 AGN [8086:5201]
          Kernel driver in use: iwlwifi
  05:00.0 FireWire (IEEE 1394) [0c00]: JMicron Technology Corp. IEEE 1394 Host Controller [197b:2380] (rev 30)

  If I run
  % sudo ifconfig eth0 down
  % sudo ifconfig eth0 up
  System Settings/Network/Wired show the interface activate briefly, then go back to the disconnected state.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: unity-control-center 15.04.0+15.04.20150410-0ubuntu1
  ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3
  Uname: Linux 3.19.0-16-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue May  5 10:38:15 2015
  ExecutablePath: /usr/bin/unity-control-center
  InstallationDate: Installed on 2013-05-02 (733 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  SourcePackage: unity-control-center
  UpgradeStatus: Upgraded to vivid on 2015-04-26 (8 days ago)
  usr_lib_unity-control-center: deja-dup 32.0-0ubuntu5

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