Ahoy! This is my first post here on Tek Syndicate, but I have been a member for some time now.
Google has failed me :( I have been looking for a fix for my Ubuntu 14.04 Ethernet. It says that its unplugged even though it is actually plugged in. I'm fairly new to Linux and I'm taking every opportunity I can get to learn more. I have tried a few different "Fixes" on the internet, but sadly I still cannot get it to work.
I'm assuming your NIC is off, check from the network settings (right-click the net icon) if it's enabled or not EDIT: Or via the terminal 'sudo ip link set eth0 up'
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000
link/ether 00:23:15:61:49:d8 brd ff:ff:ff:ff:ff:ff
4: wmx0: <NO-CARRIER,NOARP,UP> mtu 1400 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 20
link/ether 64:d4:da:10:e9:87 brd ff:ff:ff:ff:ff:ff
Nothing comes up when I add that. It just returns to where you can add commands to the terminal. To be quite honest i'm not sure what kind of card it is. Its on an Asus u52f
Since nothing came up, the operating system has never detected the network card. Do you know if the card works in WIndows? Also, have a look in the bios to check if the card is disabled somehow.
Otherwise it seems the card is broken...
For reference, this is what I get when I type lspci | grep -i ethernet 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04)
Unless youve done something horribly wrong with the ubuntu install (unlikely) or turned off the ethernet card (far more likely) then its simply broken.
Either that or thinking about it... you are using sudo to run these commands? maybe ubuntu wont give you anything back without being root.
Try
sudo lspci -vv | grep Ethernet
to check its actually working running sudo lspci with no other arguments should spill out all your pci info.