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<credit type="author">
 <name>Contributors to the Ubuntu documentation wiki</name>
 </credit>
 <credit type="author">
 <name>GNOME Documentation Project</name>
 <email>gnome-doc-list@gnome.org</email>
 </credit>

<desc>Even though your wireless adapter is connected, it may not have been
 recognized properly by the computer.</desc>
 </info>

<title>Wireless connection troubleshooter</title>
 <subtitle>Check that the wireless adapter was recognized</subtitle>

Even though the wireless adapter is connected to the computer, it may not
 have been recognized as a network device by the computer. In this step, you
 will check whether the device was recognized properly.

<steps>
 <item>
 Open a Terminal window, type <cmd>lshw -C network</cmd> and press
 <key>Enter</key>. If this gives an error message, you may need to install
 the <app>lshw</app> program on your computer.
 </item>
 <item>
 Look through the information that appeared and find the Wireless
 interface section. If your wireless adapter was detected properly,
 you should see something similar (but not identical) to this:
 <code><![CDATA[*-network
 description: Wireless interface
 product: PRO/Wireless 3945ABG [Golan] Network Connection
 vendor: Intel Corporation]]></code>
 </item>
 <item>
 If a wireless device is listed, continue on to the
 <link xref="net-wireless-troubleshooting-device-drivers">Device Drivers
 step</link>.
 If a wireless device is not listed, the next steps you take
 will depend on the type of device that you use. Refer to the section
 below that is relevant to the type of wireless adapter that your computer
 has (<link xref="#pci">internal PCI</link>, <link xref="#usb">USB</link>,
 or <link xref="#pcmcia">PCMCIA</link>).
 </item>
 </steps>

<section id="pci">
 <title>PCI (internal) wireless adapter</title>

Internal PCI adapters are the most common, and are found in most laptops
 made within the past few years. To check if your PCI wireless adapter was
 recognized:

<steps>
 <item>
 Open a Terminal, type <cmd>lspci</cmd> and press <key>Enter</key>.
 </item>
 <item>
 Look through the list of devices that is shown and find any that are
 marked <code>Network controller</code> or <code>Ethernet
 controller</code>. Several devices may be marked in this way; the one
 corresponding to your wireless adapter might include words like
 <code>wireless</code>, <code>WLAN</code>, <code>wifi</code> or
 <code>802.11</code>. Here is an example of what the entry might look
 like:
 <code>Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection</code>
 </item>
 <item>
 If you found your wireless adapter in the list, proceed to the
 <link xref="net-wireless-troubleshooting-device-drivers">Device Drivers
 step</link>. If you didn’t find anything related to your wireless
 adapter, see
 <link xref="#not-recognized">the instructions below</link>.
 </item>
 </steps>

</section>

<section id="usb">
 <title>USB wireless adapter</title>

Wireless adapters that plug into a USB port on your computer are less
 common. They can plug directly into a USB port, or may be connected by a USB
 cable. 3G/mobile broadband adapters look quite similar to wireless (Wi-Fi)
 adapters, so if you think you have a USB wireless adapter, double-check that
 it is not actually a 3G adapter. To check if your USB wireless adapter was
 recognized:

<steps>
 <item>
 Open a Terminal, type <cmd>lsusb</cmd> and press <key>Enter</key>.
 </item>
 <item>
 Look through the list of devices that is shown and find any that seem
 to refer to a wireless or network device. The one corresponding to your
 wireless adapter might include words like <code>wireless</code>,
 <code>WLAN</code>, <code>wifi</code> or <code>802.11</code>. Here is an
 example of what the entry might look like:
 <code><![CDATA[Bus 005 Device 009: ID 12d1:140b Huawei Technologies Co., Ltd. EC1260 Wireless Data Modem HSD USB Card]]></code>
 </item>
 <item>
 If you found your wireless adapter in the list, proceed to the
 <link xref="net-wireless-troubleshooting-device-drivers">Device Drivers
 step</link>. If you didn’t find anything related to your wireless
 adapter, see
 <link xref="#not-recognized">the instructions below</link>.
 </item>
 </steps>

</section>

<section id="pcmcia">
 <title>Checking for a PCMCIA device</title>

PCMCIA wireless adapters are typically rectangular cards which slot into
 the side of your laptop. They are more commonly found in older computers. To
 check if your PCMCIA adapter was recognized:

<steps>
 <item>
 Start your computer without the wireless adapter plugged
 in.
 </item>
 <item>
 Open a Terminal and type the following, then press
 <key>Enter</key>:
 <code>tail -f /var/log/messages</code>
 This will display a list of messages related to your computer’s
 hardware, and will automatically update if anything to do with your
 hardware changes.
 </item>
 <item>
 Insert your wireless adapter into the PCMCIA slot and see what
 changes in the Terminal window. The changes should include some
 information about your wireless adapter. Look through them and see if you
 can identify it.
 </item>
 <item>
 To stop the command from running in the Terminal, press
 <keyseq><key>Ctrl</key><key>C</key></keyseq>. After you have done that,
 you can close the Terminal if you like.
 </item>
 <item>
 If you found any information about your wireless adapter, proceed to
 the <link xref="net-wireless-troubleshooting-device-drivers">Device
 Drivers step</link>. If you didn’t find anything related to your wireless
 adapter, see <link xref="#not-recognized">the instructions
 below</link>.
 </item>
 </steps>
</section>

<section id="not-recognized">
 <title>Wireless adapter was not recognized</title>

If your wireless adapter was not recognized, it might not be working
 properly or the correct drivers may not be installed for it. How you check to
 see if there are any drivers you can install will depend on which Linux
 distribution you are using (like Ubuntu, Arch, Fedora or openSUSE).

To get specific help, look at the support options on your distribution’s
 website. These might include mailing lists and web chats where you can ask
 about your wireless adapter, for example.

</section>

</page>