#title Wireless Troubleshooting Guide #pragma section-numbers 2 <> ||<>|| = Troubleshooting Wireless Networks with Ubuntu = ## ''WifiDocs/WiFiTroubleshooting should be merged into this document.'' == Introduction == This guide aims to help in troubleshooting wireless networks on Ubuntu. Before undertaking the steps in this guide, try the recommendations in the [[https://help.ubuntu.com/|Offical Ubuntu Documentation]] for your version of Ubuntu. == Quick Check == 1. With your computer turned off, insert your wireless adapter into a suitable port/slot. 1. Turn on your computer and log-in if/when prompted. 1. Open a terminal window and enter the following command: {{{ nmcli }}} 1. This program will output the information Network Manager has collected about your card, much of which will assist in setting-up wireless networking . 1. If the output contains: {{{ State: connected }}} (and you are not on a wired connection) then your wireless adpater is working and connected to a network. 1. Left-click on the panel applet (four vertical bars in 9.10 or older; 4 concentric arcs in 10.04). If you can see wireless networks, then your wireless works; you need to connect to a network. See below on network connection. == Troubleshooting Steps == Troubleshooting wireless networks in Ubuntu can be approached in three steps in order: 1. Check that your wireless adapter is enabled and that Ubuntu recognizes it: see [[/Devices|Device Recognition and Operation]]. 1. Check if drivers are available for your wireless adapter; install them and check them: see [[/Drivers|Device Drivers]]. 1. Check your connection to the Internet: see [[/Connections|Wireless Connections]]. 1. Check if your wireless device is disabled by hardware switch or in BIOS; if the terminal command {{{rfkill list}}} shows "Hard blocked: yes", you may need to turn a physical switch on your laptop, or to enable your wireless device during the boot process. 1. If it still does not work, ask a question at Launchpad, Ubuntu's official help: [[/WirelessAskQuestionAtLaunchpad|instructions]]. <> == Reference == * [[/Commands|Commands]] - a comprehensive list of commands, with explanations, for troubleshooting your wireless connection * [[/ConfigFiles|Wireless Configuration Files]] - A list of the configuration files used in Ubuntu for configuring wireless networks. == External Links == * [[http://oob.freeshell.org/nzwireless/LWAP-HOWTO.html|Linux Wireless Access Point HOWTO]] - A guide from June 2003 by Simon Anderson * [[http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/|Wireless linux resources]] - A links page with many resources. * [[http://www.tldp.org/HOWTO/NET3-4-HOWTO.html/|tldp Linux networking howto]] - The Linux Networking !HowTo from The Linux Documentation project. * [[http://www.us.debian.org/doc/manuals/reference/ch05.en.html|Debian Network Configuration]] - From the Debian Reference v2 * [[http://users.linpro.no/janl/hardware/wifi.html|Survey of Linux and Wifi]] - Last updated 24th April 2006. * [[https://help.ubuntu.com/community/WirelessTroubleshootingProcedure|Wireless troubleshooting procedure]] ---- CategoryNetworking CategoryWireless