Ubuntu
gnome-nettool package

DHCP configuration failed during install

Asked by Lantos Szabi

When I installed Ubuntu Studio, i had an ethernet cable plugged in, but it was not detected and the dhcp configuration failed. It was an internet connection trough a proxy... it cannot be detected at install?
So i must setup now some networking. I constantly move with my laptop, so dhcp setup would be good, but dhcp can detect also for wireless and proxy?

Please answer what networking should I set up, and how? Please write it step by step because I am a beginner.

Thank you,

Francis

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actionparsnip (andrew-woodhead666) said : 		#1

If you run:

sudo dhclient3 eth0

What is output?

Are you fully updated?

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Lantos Szabi (posta-lantosszabi) said : 		#2

This is what i got:

lantosszabi@lant:~$ sudo dhclient3 eth0
[sudo] password for lantosszabi:
Internet Systems Consortium DHCP Client V3.1.3
Copyright 2004-2009 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/00:1e:ec:4a:f5:a1
Sending on LPF/eth0/00:1e:ec:4a:f5:a1
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 1
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
lantosszabi@lant:~$

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Lantos Szabi (posta-lantosszabi) said : 		#3

i dont know how can i find out if I am fully updated or not... please help

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actionparsnip (andrew-woodhead666) said : 		#4

Get a connection in your usual way and run:

sudo apt-get update; sudo apt-get upgrade; sudo apt-get dist-upgrade

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Lantos Szabi (posta-lantosszabi) said : 		#5

i made the update, upgrade and dist-upgrade,

but i still have the proxy data manually entered necessary for my current connection, in browser, network proxy, and wired connection.

when i move to an other wired connection , or wireless, should I delete this data?

can dhcp detect ip addresses also for wireless and proxy?

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Omar Mohsen (omohsen) said : 		#6

I believe you say you move your laptop , maybe it is a cable problem , have you tried the cable on another computer?

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actionparsnip (andrew-woodhead666) said : 		#7

Or a different port on the interconnecting device (assuming it has more than one)

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