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3.

This document is maintained by the Ubuntu documentation team (https://wiki.ubuntu.com/DocumentationTeam). For a list of contributors, see the <ulink url="../../libs/C/contributors.html">contributors page</ulink>

15.

<application>KNetworkManager</application> makes connecting and managing your connections a snap. Whether you are using a wired (Ethernet) connection or a wireless connection, <application>KNetworkManager</application> can monitor for connects and disconnects, locates wireless access points, and manages your wireless encryption (see <xref linkend="network-apps-knetworkmanager"/>).

18.

If you are having issues connecting to your network or the Internet, the first thing you need to do is locate the model of the network device you are using. To do so, unfortunately you will have to use the command line at this time. To get to the command line in Kubuntu, press <keycombo><keycap>Alt</keycap><keycap>F2</keycap></keycombo>. This will open up a pop-up called <application>KRunner</application>. Enter the word <userinput>konsole</userinput> and press <keycap>Enter</keycap>. You will notice that once <application>Konsole</application> opens, you will see something similar to <prompt>username@hostname:~$</prompt>. Here you will type <userinput>lspci</userinput> and press <keycap>Enter</keycap>. Locate your network hardware information, you will need this for the upcoming sections, especially for wireless cards.

20.

A majority of connection settings can be changed from within the <guilabel>Network Settings</guilabel> section of System Settings. To access the Network Settings, go to <menuchoice><guimenu>Kickoff Application Launcher</guimenu><guimenuitem>System Settings</guimenuitem></menuchoice> and then select <guilabel>Network Settings</guilabel> at the lower left of the window.

54.

From within the <guilabel>Network Connection</guilabel> window there is a tab named <guilabel>Network Interfaces</guilabel>. Hopefully you will see your adapter labeled something like <guilabel>eth0</guilabel>. If there is an issue with the card or the settings, usually the system will automatically disable the card. If the card is disabled, you will see <guilabel>X Disabled</guilabel> under the <guilabel>State</guilabel> column. To enable the device, simply press the <guibutton>Administrator Mode...</guibutton> at the bottom of the window. This will open a password dialog in which you enter your username's password. Once you have entered this mode, simply press the <guibutton>Enable Interface</guibutton> button. If there are issues enabling the device, you will be notified with an error. To see the settings of this device, press the <guibutton>Configure Interface...</guibutton> button. The window that opens will allow you to manually configure your network settings to match your network.

57.

Terminal Program (Konsole)

64.

Wireless networking has gotten better with Kubuntu 9.10, however there are still problems for users who do not have a card supported natively. If you have not purchased a wireless card yet, please take a look at the supported hardware at <ulink url="https://help.ubuntu.com/community/WifiDocs/WirelessCardsSupported"/>.

72.

If the above did not work, open <application>Konsole</application> (<menuchoice><guimenu>Kickoff Application Launcher</guimenu><guisubmenu>Applications</guisubmenu><guisubmenu>System</guisubmenu><guimenuitem>Terminal (Konsole)</guimenuitem></menuchoice>) and type <userinput>ping gateway_ip_address</userinput> (substitute gateway_ip_address by the ip address of your gateway. This address will be something like 10.0.0.1, 192.168.1.1, or 192.168.2.1, but may vary depending on the nature of your network). If you are able to ping your gateway, then the DNS on your computer is working correctly. If you are not able to ping the gateway, then you do not have a proper Internet connection.

74.

<emphasis role="bold">Command line</emphasis>: (<menuchoice><guimenu>Kickoff Application Launcher</guimenu><guisubmenu>Applications</guisubmenu><guisubmenu>System</guisubmenu><guimenuitem>Terminal (Konsole)</guimenuitem></menuchoice>) This will open up <application>Konsole</application> providing you with a terminal or the command line. Once you are sitting at the command prompt simply type <userinput>lspci</userinput> and press the <keycap>Enter</keycap> key. Locate the <guilabel>Network controller:</guilabel> line as this will provide information about your wireless adapter.

78.

Since kernel version 2.6.17, support for Broadcom wireless devices were included. This means that there are some Broadcom devices that work out of the box, however there are still many that don't. If your Broadcom wireless device isn't working then you have two choices; <application>bcm43xx-fwcutter</application> or <application>NdisWrapper</application>.