I'm using Ubuntu 10.04 on my notebook. It's wireless is configured automatically and I can connect to wireless connections without any problem. Nowadays, the network facilities of dormitory have been changes and I can't use the wireless in the dormitory anymore! I have no problem with other wireless networks, but here it's impossible to connect. I used iwconfig command and got:
lo no wireless extensions.
eth1 IEEE 802.11 Access Point: Not-Associated
Link Quality:5 Signal level:0 Noise level:199
Rx invalid nwid:0 invalid crypt:0 invalid misc:0
eth0 no wireless extensions.
vboxnet0 no wireless extensions.
Of course, I'm connected with cable. When I use
sudo iwconfig eth1 essid Sharafi_T8_B
I get no error but still the network is not connected! So what's the problem?
Also, when I use command sudo dhclient eth1 I get the following:
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/eth1/...
Sending on LPF/eth1/...
Sending on Socket/fallback
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 14
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 6
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
