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Recently I upgrade my system from 13.10 to 14.04, after a week I faced unstable wired network connection issue. Checked network manager it shows connection as ok. Below is the detail information of system :

1) Network manager information

nm-tool

NetworkManager Tool

State: connected (global)

  • Device: eth0 [Auto Ethernet] ------------------------------------------------ Type: Wired Driver: tg3 State: connected Default: yes HW Address: 00:25:64:C7:5D:87 Capabilities: Carrier Detect: yes Speed: 1000 Mb/s

    Wired Properties Carrier: on

    IPv4 Settings: Address: 172.20.150.51 Prefix: 24 (255.255.255.0) Gateway: 172.20.150.254

    DNS: 172.20.50.4 DNS: 172.20.50.12

2) Kernel name

uname -r

kernel version : 3.13.11-031311-generic

Network card information : command : lspci -vnn | grep -i net o/p : 02:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe [14e4:1698] (rev 10)

system information : Dell optiplex 380 amd-64

abhichvn
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  • I am facing same issue with my clean install of Ubuntu 14.04 on my new Lenovo L440 laptop. Wifi is not working with driver issue and Ethernet is intermittent. I am clueless on how to proceed! Please let me know if somebody finds some solution –  Jul 24 '14 at 04:43

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