LinuxQuestions.org - unable to use wireless connection

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unable to use wireless connection

recently installed ubuntu 9.10 on my HP pavalion DV4 laptop all the things are working fine except wireless connection. I am unable to connect to the wifi network. pls. help

Connect to the internet with a cable.
Use the ubuntuforums, here, and google.com to search.

You will need to type

Code:

ifconfig -a

to see which interface is active.

Code:

dmesg | grep ethX <X being the non active NIC>

ifconfig ethX up

iwconfig ethX essid any

You also will need to look at the specs to be able see which wireless driver you need.
Have you installed wireless tools?

I would take it in a slightly different order:

First: "iwconfig" (In Ubuntu, probablyl "sudo iwconfig"
This tells you if you have a working wireless device.....If all the devices say "no wireless extensions", then you need to install a driver. For this, we need the specs on your wireless card. Probably the easiest way to find this is "lspci"

The commands in quotes are entered in a terminal. If you haven't found this already, look through your menus.

We definitely need more information. Open a terminal.

Type in the following and post the output of each.

Code:

lspci | grep -i net

lsmod

dmesg | grep firmware

please post the output to:

Code:

lspci # will tell us the pci devices you have in your system.

lsusb # will tell us the usb devices you have in your system.

ifconfig # will tell us what network interface cards that are turned on you have on your system.

ifconfig -a # will list all network interface cards you have on your 

iwconfig # will tell us which of your network interface cards has wireless capability 

lsmod # will list the modules that are loaded on your system.



sudo iwlist <network-card> scan # this will use the <network-card> interface (that from the iwconfig command above) and scan for wireless routers that are accessible.

sudo iwconfig <network-card> essid <your-router-name> # assuming no security (the access point names will be provided by the previous iwlist command).

sudo dhclient # will attempt to get ip-address, subnet mask, dns server information automatically from your router assuming dhcp is turned on on your router.

it would be easier for us to read if it is in [code] tags.