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Thread: 12.10: Ethernet tries connecting, but fails

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    Jan 2011
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    12.10: Ethernet tries connecting, but fails

    Hi, coming here last time fixed the wifi, so hoping some one here can also help me get my ethernet problems fixed

    In my present location (at work) my ubuntu machine can't connect through ethernet. I can see it, meaning that the ethernet connection is listed as an option when I plug in the cable, however the computer never manages to make the connection and eventually gives up (after perhaps 30-60 seconds). I have no problems connecting to the ethernet at home. Nor is my old computer (also ubuntu, but 12.04) having any problems with this ethernet.

    It is my impression that the following information is called for:

    ifconfig:

    Code:
        eth0      Link encap:Ethernet  HWaddr b8:88:e3:09:5b:5f  
                  inet6 addr: fe80::ba88:e3ff:fe09:5b5f/64 Scope:Link
                  UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                  RX packets:28603 errors:0 dropped:504 overruns:0 frame:0
                  TX packets:285 errors:0 dropped:0 overruns:0 carrier:0
                  collisions:0 txqueuelen:1000 
                  RX bytes:3659141 (3.6 MB)  TX bytes:74547 (74.5 KB)
                  Interrupt:16 
    
        eth1      Link encap:Ethernet  HWaddr 08:ed:b9:f2:6d:0d  
                  inet addr:10.185.116.115  Bcast:10.185.255.255  Mask:255.255.0.0
                  inet6 addr: fe80::aed:b9ff:fef2:6d0d/64 Scope:Link
                  UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                  RX packets:17746 errors:1 dropped:0 overruns:0 frame:11381
                  TX packets:5773 errors:13 dropped:0 overruns:0 carrier:0
                  collisions:0 txqueuelen:1000 
                  RX bytes:8212111 (8.2 MB)  TX bytes:798195 (798.1 KB)
                  Interrupt:17 
    
        lo        Link encap:Local Loopback  
                  inet addr:127.0.0.1  Mask:255.0.0.0
                  inet6 addr: ::1/128 Scope:Host
                  UP LOOPBACK RUNNING  MTU:16436  Metric:1
                  RX packets:1570 errors:0 dropped:0 overruns:0 frame:0
                  TX packets:1570 errors:0 dropped:0 overruns:0 carrier:0
                  collisions:0 txqueuelen:0 
                  RX bytes:174187 (174.1 KB)  TX bytes:174187 (174.1 KB)
    lshw -C network:

    Code:
     WARNING: you should run this program as super-user.
          *-network               
               description: Ethernet interface
               product: NetLink BCM57785 Gigabit Ethernet PCIe
               vendor: Broadcom Corporation
               physical id: 0
               bus info: pci@0000:02:00.0
               logical name: eth0
               version: 10
               serial: b8:88:e3:09:5b:5f
               capacity: 1Gbit/s
               width: 64 bits
               clock: 33MHz
               capabilities: bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
               configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.123 firmware=sb latency=0 multicast=yes port=twisted pair
               resources: irq:16 memory:b3430000-b343ffff memory:b3440000-b344ffff memory:b3450000-b34507ff
          *-network
               description: Wireless interface
               product: BCM43228 802.11a/b/g/n
               vendor: Broadcom Corporation
               physical id: 0
               bus info: pci@0000:03:00.0
               logical name: eth1
               version: 00
               serial: 08:ed:b9:f2:6d:0d
               width: 64 bits
               clock: 33MHz
               capabilities: bus_master cap_list ethernet physical wireless
               configuration: broadcast=yes driver=wl0 driverversion=5.100.82.112 ip=10.185.116.115 latency=0 multicast=yes wireless=IEEE 802.11
               resources: irq:17 memory:b3500000-b3503fff
        WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
    I have no idea why there seems to be two ethernet connections listed.

    Thanks in advance, I hope someone will have some suggestions

    EDIT - additional information:

    I tried looking at the end of /var/log/kern.lo, and got the following:

    Nov 21 14:55:36 kaare-Aspire-V3-571G kernel: [ 406.122713] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
    Nov 21 14:55:47 kaare-Aspire-V3-571G kernel: [ 416.873347] tg3 0000:02:00.0: eth0: Link is up at 1000 Mbps, full duplex
    Nov 21 14:55:47 kaare-Aspire-V3-571G kernel: [ 416.873353] tg3 0000:02:00.0: eth0: Flow control is off for TX and off for RX
    Nov 21 14:55:47 kaare-Aspire-V3-571G kernel: [ 416.873356] tg3 0000:02:00.0: eth0: EEE is disabled
    Nov 21 14:55:47 kaare-Aspire-V3-571G kernel: [ 416.874342] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

    while this was going on, the "quarter-circle" icon in the top corner was doing the "wave" animation, meaning that it was working, and at some point a message came up saying "Wired Network // Disconnected" (in two lines).
    Does that help anyone?
    Last edited by DuckZoro; November 21st, 2012 at 03:18 PM. Reason: additional information

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