Try this to obtain an IP address from your DHCP server:

sudo dhclient eth0 

If it didn't help try to "reset" the network manager state and reboot your computer.

sudo rm -f /var/lib/NetworkManager/NetworkManager.state 

Printers can be easily configured using CUPS. Ubuntu server should have all required packages installed, to check if they are run:

# dpkg -l cups



# service cups status

Status of Common Unix Printing System: cupsd is running.

If CUPS is not running start it, then you can access it on http://localhost:631 . This works also on your desktop
installation, but since, I suppose, you don't have a running X server on your Ubuntu server you'll have to make it listen
on all interfaces instead of localhost and add Allow from all or only your IP address accordingly.

# vim /etc/cups/cupsd.conf



Listen 0.0.0.0:631



[ ... ]



<Location />

  Order allow,deny

  Allow from all

</Location>



<Location /admin>

  Order allow,deny

  Allow from all

</Location>



[ ... ]





# service cups restart

After that if you go to https://SERVER_IP:631 you can add your printer. After you are done adding your printer set CUPS back to listen on localhost only.

BASH is pretty universal and powerful, but if you want something mightier I would suggest Python. You can use it for simple scripts, but also for complex applications, it's really easy to learn and if you come across a 6 months old script you will still know what it does (unlike Perl :) )

I heard about this problem with 64bit flash... a friend had the same issue on the newest fedora, however i don't remember how he solved it :dry: flash reinstall is always worth a try or maybe this (older) ubuntu forum thread

Try to run this command...

sudo rm -f /var/lib/NetworkManager/NetworkManager.state

... and reboot

saqman2060 wrote:

[code]cat /etc/network/interfaces [/code]
only loopback should be present


shouldn't the ethernet be present too?

iirc it's only present on a server installation, where the interface has an entry like

auto eth0

iface eth0 inet dhcp

for dhcp, on a desktop system this should be handled by the network manager daemon

Ok, this commands might help (I'm assuming that the cable is connected, interface is called eth0 and that there is a dhcp server somewhere on your network):

sudo ifconfig eth0 up

sudo dhclient

Strange... could you open your Terminal application as mentioned before and paste here the output of these commands (some were already mentioned, but bear with me :) ):

status network-manager

cat /var/lib/NetworkManager/NetworkManager.state

ifconfig

route -n

cat /etc/network/interfaces 

nslookup linux.com

dns is working... i know I've posted a lot of commands here, but the output hopefully will give the ppl in this thread a better insight on the problem...

perhaps examining the commands used in this script would help: http://www.ossec.net/wiki/Tweaking_OSSEC#Easy_uninstallation

If in the output of this command

cat /var/lib/NetworkManager/NetworkManager.state

you'll see that the networking is disabled, delete the NetworkManager.state file (and restart the service)

sudo rm /var/lib/NetworkManager/NetworkManager.state

sudo service network-manager restart