Ethernet is a way of connecting computers together in a local area network or LAN.

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Cannot connect to ethernet with wired connection Ubuntu 12.10

I am new to Ubuntu (installed Ubuntu 12.10 desktop on my Mac Mini today from Ubuntu iso – mac mini had blank SSD on it i.e. no OS X at all). First drama is that Ubuntu installer seems to be setup for ...
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1answer
10 views

Error fetching interface information: Device not found

Running 14.04 on VMWare player, I am trying to configure a new Ethernet device eth1 through editing /etc/network/interfaces. I have configured a device for eth0, and that is working properly. Here ...
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1answer
20 views

ARP flux how to solve

I have a server with 2 NICs having an IP address in the same subnet, this is what my /etc/network/interfaces looks like: auto eth0 iface eth0 inet static address 192.168.2.155 gateway ...
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Ubuntu 14.04 router, Windows computer connects on boot, if ethernet is unplugged and replugged DNS error

When I boot up the Ubuntu server the windows computer that is connected to the ETH1 via ethernet cable is assigned an IP and connect to the internet. If I unplug the ethernet cable and then plug it ...
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18 views

Cannot connect to the internet after installation

During installation of 14.04 I had a wired connection that worked. After installing and restarting computer, no internet connection at all. I had used wired connection during install because the ...
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1answer
12 views

14.04 Ethernet works only directly through modem

After searching through all the help suggestions, I still cannot find a direct answer to this: I recently bought an empty Lenovo Thinkserver and successfully installed Ubuntu 14.04 via a live USB. ...
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22 views

Internet and Trackpad don't work anymore (Ubuntu 14.04)

So, I just got a new laptop, and because of that I set aside my Ubuntu laptop for a few days. The last time I used it was Tuesday and it worked 100% perfectly. Flash forward to today, I just started ...
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2answers
3k views

How to configure preferred network for internet?

I am connected to a LAN network and wireless network. Both provide access to internet. Sometimes when the internet on LAN is not working, the browser simply throws an exception instead of switching ...
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Define specific internet routing with Network Manager [duplicate]

I have a wireless internet that goes out to the Internet, but I have Ethernet set up for a private internal non-Internet-facing network. When I connect my Ethernet on this private static ...
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1answer
2k views

Ubuntu Server 12.10 not obtaining IP address until a user logs in

I just did a recent install of Ubuntu Server 12.10 (no GUI, command line only) on a new system. I noticed that upon booting the server does not obtain an IP address from my router. However, once I ...
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1answer
68 views

Network eth0 DHCP and static ip issues

Background I am running an Ubuntu Server on 14.04 which is currently up-to-date. I have only one network device connected to it. When I use my Ethernet cord and connect it from the wall to my laptop ...
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1answer
5k views

Configure second network card/interface

i'm configuring one server (ubuntu 12.04 64bits, with kvm) with 2 card adapters. The first one (eth0) is configured to work with virtual bridge (vbr0) for the DMZ interface. Ho can i condigure the ...
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Intel 82576 Ethernet Controller stuck at 10Mb/s

I have a server board which uses the Intel 82576 network controller. When I plug it into my gigabit switch it auto configures a link speed of 10Mb/s. $ sudo ethtool eth0 Supported ports: [ TP ] ...
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36 views

Ubuntu 14.04 + FritzBox 6360cable Connection Issues

at the moment I cannot get any further with guides or forums so I thought and try you guys. My Situation is as follows: My Network is based on a FritzBox 6360cable Router with multiple machines via ...
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24 views

Usb to Ethernet Adaptor

I have a Gigaware USB to Ethernet dongle, ubuntu 14.10, and a lenovo miix 2 11.6 slate. I would be happy if it showed up in ifconfig as an eth0 device but plugging it in does nothing. lsusb -d ...
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2answers
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Ubuntu 14.04 LTS wired internet extremely slow

My wired internet is running extremely slow after installing Ubuntu 14.04 on my desktop. my normal internet speed (Windows) using speedtest.net is around 25 mbps, Ubuntu is pulling in 0.5 mbps tops. ...
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1answer
47 views

Ethernet works during install, but after booting neither eth0 or wlan0 appear

First time I tried to install 14.04 on my Dell Vostro 1500, the wi-fi didn't work to download updates while installing. Upon first boot, it still didn't work so I plugged in the ethernet cable. Still ...
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78 views

Can't get an ethernet connection with Ubuntu 14.10 and RTL8111/8168/8411

I have spent 3 days working on this problem and have hit a brick wall. Basically I inherited this desktop from a friend and he had Windows Vista running perfectly fine. I have since then installed ...
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62 views

Wired or wireless internet connection failure - Ubuntu 14.04

I have a D-Link router and modem connected to my PC running Ubuntu 14.04. I am unable to get both wired and wireless connection out of this setup. All was fine till day before yesterday, when all of a ...
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1answer
61 views

Ubuntu Server 14.04.1 LTS keeps breaking entire ethernet LAN

ifconfig syslog at time of failure Basically what happens is: 1) I reboot the machine (either with hard shut down or by hitting the reset button) 2) Everything is fine 3) At some random time ...
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1answer
40 views

Why is my USB Ethernet Card not working in Ubuntu 14.04 Server?

I've got a laptop which I'm trying to set up as a server (a rebadged Uniwill 223ii0), but it has an ethernet port which is dodgy (sometimes works, sometimes doesn't). I bought a £20 usb ethernet card ...
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Ethernet Lights Not On When Cable Connected And Not Working

I have two OS and second OS connects to internet easily, so it's not a hardware problem. The output of lspci is: 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM ...
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1answer
5k views

Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E

I had Ubuntu 11.10 and in the last few weeks I experienced an obscure problem: after I had the computer running for a few days I could no longer connect to google.com or anything related to google. ...
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19 views

14.04 server not connecting to install

I'm trying to install server 14.04 and am trying to get to the mirrors but none is working. (I can get it running online). I am also having a hard time understanding the other mirrors if someone can ...
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1answer
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ubuntu 14.04 wont connect to ethernet - trying manual question

I'm very new to linux - I'm on my chromebook now trying to look up answers. So I can't connect my linux run pc to my Ethernet (I know it's working as my chromebook can connect to it) so I'm now ...
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1answer
115 views

Ethernet (intermittent) +wifi (not working) in 14.04 on HP Elitebook 725

I have purchased an HP Elitebook 725 and installed Ubuntu to dual boot with Windows. Initially I installed 14.10 but, following discussion at http://ubuntuforums.org/showthread.php?t=2254816, I have ...
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21 views

Cannot get eth0 to transmit packets

I have installed 14.10 on a new hard drive and PC dual boots windows 7. Ethernet is OK on Windows 7. On Ubuntu though DHCP fails and manually setting eth0 all the tests I have found by Google look OK ...
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2answers
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ifconfig eth0 eth0: error fetching interface information: Device not found

I'm new to Ubuntu. In my system WIFI is working fine but Ethernet is not working fine. ifconfig -a lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 ...
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22 views

test of usb on ethernet mode

I am trying to connect my DELL XPS 13 developer edition to a network with a USB to Ethernet adapter (this laptop doesn't have an Ethernet port). I am not able get any signal. I have tried using this ...
7
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1answer
2k views

OpenVPN: The VPN connection to … because of invalid VPN secrets

I am 3 days into using Linux. I set up an OpenVPN connection following the instructions set out by: https://www.goldenfrog.com/support/vyprvpn/vpn-setup/linux/openvpn OpenVPN installation went ...
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1answer
13 views

Multiple networks with DHCP prioritizing one

I'm trying to setup a client machine connected to two networks, both going out to the internet. Both networks, eth0 and vlan (eth0.8) should use DHCP. I want to use all the domain-name-servers, ...
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(fixed, it was a router problem) Gigabyte 990FXA-UD3 rev 4.0 Ethernet Problems

About a week ago I built a gaming computer for myself that would run linux on it (I use ubuntu 14.04 LTS) Here is my pc specs: Processor: AMD FX-8350 4.0 ghz Motherboard: Gigabyte 990FXA-UD3 rev 4.0 ...
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4answers
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“Wired Network Disconnected” even when connected- no ethernet connection possible

I am unable to connect to the internet via ethernet or wifi. Let's fix the ethernet issue, eh? I just installed Unbuntu 12.04 on an HP Mini 1000. Previously it had 11.04, and the ethernet didn't ...
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0answers
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usb Modem ethernet problem on ubuntu 14.04 LTS

i am using MTS Mblaze Huawei EC315 on my ubuntu 14.04 sometimes it works fine as dongle (Ethernet network Huawei technology Huawei mobile) as wired connection but sometime it dont work how to fix ...
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37 views

Ethernet connection not working (1 Gbits/s - worked good before)

I have a quite annoying problem : since few days (around 2 months) my linux ethernet connection is not working (it worked good before, don't know why it's not working anymore). I have a dual boot ...
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3answers
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Wired Network (eth0) disappears on a Lenovo Z570

I upgraded from Ubuntu 11.10 to 12.04 yesterday. I am running a BSNL Broadband DSL conenction. The wired network suddenly dissapears and the computer stops detecting the ethernet card after sometime. ...
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2answers
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How is a device managed when not in /etc/network/interfaces on Servers?

On my Ubuntu Server, 14.04.1 LTS, I have not specified any devices in /etc/network/interfaces, yet they (multiple ethernets) work completely as intended with static IP. I have heard from multiple ...
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RTL8111/8168B Rev 06 Ethernet controller not working with AMD64 Kernels > 2.6

I'm also having trouble with the RTL8111 Ethernet controller. It's not working at all on Ubuntu x64. This is my card: $ lspci -nnk | grep -i net -A2 05:00.0 Ethernet controller [0200]: Realtek ...
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0answers
265 views

Ubuntu 14.04 recognize my Thunderbolt Ethernet only in start up

Ubuntu 14.04 recognize my Thunderbolt Ethernet only in start up and when Ethernet disconnect or unplug Thunderbolt Ethernet, i can not connect to Ethernet network any more and i have to restart. how ...
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2answers
53 views

Ubuntu server can no longer get address from DHCP

A couple of years ago, I set up an Ubuntu server with RAID to act as a home file server. All was well until last week, when my other computers could no longer access the files. My problem is ...
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21 views

Ethernet detection problem after recent update

I have been experiencing this particular problem of non-detection of ethernet cable after installing updates via terminal a few days ago. Now either the system doesn't detects ethernet or detects it ...
3
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1answer
502 views

Ethernet connection not working in ubuntu 14.04.1 LTS

I am facing weird issue with my ethernet connection. Its showing connected but when I hit something in the browser it won't though its connecting via wifi to other networks but not with the wired ...
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1answer
70 views

Bridge on Ubuntu 14.04

I found on the pagelink. instructions to setup a bridge between eth0 and wlan0. In particular, my system should connect to the SSID (ASUS_HOME) of my wifi modem router located at 192.168.1.1 and ...
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2answers
6k views

Ubuntu 14.04 Network Problem

I have an issue with my Ubuntu 14.04. I am able to connect to wireless networks without any problems, but when I am in my Dorm Room, I cannot connect to my wired Internet connection. It works fine ...
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71 views

Ubuntu doesn't connect to ethernet, it works only on second connection

I have ubuntu 14.04 running on a lenovo w540 About a month ago suddenly I had no ethernet connection, At the begining it worked only if I type sudo dhclient -v eth0 I played a little bit, and re ...
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92 views

Ubuntu 14.04 Wired Network Connection does not work

Running Ubuntu 14.04 on my laptop I can connect to the internet wirelessly no problem but when I try to connect to the router via a lan cable I am unable to get a connection. It seems I am unable to ...
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1answer
74 views

use of eth0 and wlan0

I have a simple Arduino HTTP Server and I want to browse this server from my Ubuntu. If I assign to Arduino an IP 192.168.0.9 and I connect the Arduino HTTP Server to my router (to any of the 4 ...
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Network Bonding Ethernet and Wifi

I am trying to bond my Ethernet (eth0) and Wifi (wlan0) connection to increase aggregate bandwidth. (They are both on different networks with different bandwidth allocations.) So far I've attempted ...
0
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1answer
81 views

Is r8168 installer in ubuntu software center secure and working?

Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06) that is what Ethernet Card I have. I have a question: I am using 14.10 and I have found issue with ...
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0answers
40 views

Can not connect to Ethernet on Ubuntu 14.04

I just recently got Ubuntu, after installation I can't seem to connect to the Internet via Ethernet. I need help.