Please help me!



Just installed Ubuntu and first time user. I can connect to my router via wifi no problem but as soon as I plug the cable in, no internet via hard line. I'm beyond confused, very frustrating and makes no sense. Please help-ideas?

What version of Ubuntu? Do you see any activity in the NetworkManager portion of the top status bar on your desktop? Once you're connected, you should see a pair of up/down arrows..
Also, what does 'ifconfig' in a terminal tell you about your connections when you plug in the network cable?
Further details

Thank you first off! I just downloaded Ubuntu 11.10 and I didn't have the arrows until I manually went into it and put in my IP address and all that. Not sure what to enter for DNS and domain though. I will get more info for you when I get home.

Also, if you may know how to help on a separate issue, I cannot install graphics drivers for some reason and my gnome 3 screen looks like crap (pixilated around edges and download progress windows are stretched and distorted).

Again, if you can help that would be great because I'm now lost.
This is what pops up after ifconfig is entered

eth0 Link encap:Ethernet HWaddr 60:eb:69:19:8f:3a
inet6 addr: fe80::62eb:69ff:fe19:8f3a/64 Scope:Link
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:70 errors:0 dropped:0 overruns:0 carrier:3
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:19706 (19.7 KB)

lo Link encap:Local Loopback
inet addr: Mask:
inet6 addr: ::1/128 Scope:Host
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

wlan0 Link encap:Ethernet HWaddr 20:7c:8f:2b:63:4c
inet6 addr: fe80::227c:8fff:fe2b:634c/64 Scope:Link
RX packets:32317 errors:0 dropped:0 overruns:0 frame:0
TX packets:16772 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:47777163 (47.7 MB) TX bytes:1713082 (1.7 MB)
You need to have the service man to have your connection fixed.
After you get eth0 to work, you get to configure wlan.
To manually connect, please use $ sudo dhclient.
You need to get IP address from DHCP server by typing:

sudo dhclient eth0
Or fix an ip address
ifconfig eth0 netmask
Also please go to Additional Drivers and install any drivers that are awaiting there. That might help you with your graphics problem. Most video cards require proprietary drivers to run properly, and Ubuntu doesn't install them by default - you have to explicitly install them. Just do a search for Additional Drivers.
Sometimes you need to install the windows drivers into ubuntu, No wireless is a common problem. Sometimes the drivers are already there, but you just need to switch them on, you can find them in the Additional Drivers section as Jamsers said above.

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