network detected but doesn't connect

[sc920505]

After the network is detected I have tried disabling my ethernet and booting up my wireless, but it doesnt connect. Whats next?

# sudo ifconfig eth0 down
# sudo dhclient -r wlan0

There is already a pid file /var/run/dhclient.pid with pid 3472
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.1.2
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.

Listening on LPF/wlan0/00:90:4b:ff:90:34
Sending on LPF/wlan0/00:90:4b:ff:90:34
Sending on Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 14
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 14
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
* Reloading /etc/samba/smb.conf smbd only
...done.

# sudo ifconfig wlan0 up
# sudo iwconfig wlan0 essid "output of ESSID from {iwlist wlan0 scanning}"
# sudo iwconfig wlan0 mode Managed
# sudo dhclient wlan0
gives same output as # sudo dhclient -r wlan0

Whats next?

Thanks !!
Steve

[reed9]

If you're still looking for help on this, please post the output of

lspci -vnn | grep -a5 -i net
lsmod
dmesg | grep firmware