Wifi Connectivity
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</imagemap>Overview
XO laptops were intentionally designed for children in developing nations, where it is faster and less expensive to introduce wireless connections, rather than a traditional telecom infrastructure. The XO Laptop is primarily designed to network with other XO Laptops using a mesh network, but the XO is also wifi capable.
At the moment, an XO laptop cannot be on both the Internet and on the mesh network at the same time with a default laptop configuration. This ability will hopefully be re-enabled by default in the future; until then, School Servers can server as Mesh Portals, and further details can be found on the Mesh Network Details page.
Getting Started
- you must have a Wireless Access Point (WAP) nearby
- verify the network name (SSID) and its password, if it has one
- carefully follow the Gettting Started instructions
Special Considerations
Wireless Access Point Setup
The OLPC Support Team has been gathering notes and configuration tips for various Wireless Access Point (WAP) connectivity. We are actively working to resolve minor compatibility issues with various Wireless Access points.
Some key setup considerations for your Wireless Access Point are:
- A single channel should be selected, not "Automatic"
- Preferred Channels are 1, 6, and 11
- The wireless network mode should be "Mixed" or "Wireless-G", not "Disabled" or "Other"
- If Wireless MAC Filtering is enabled, the MAC address for the XO must be entered
- The latest Firmware should loaded on your access point
Channel
With 802.11b or 802.11g, use channel 1, 6 or 11 in the US or Canada. Use of any other channels will degrade your own wireless signal and that of others.
Similarly, the mesh networking between XO laptops is restricted to work only on channels 1, 6 or 11.
Security
WEP Security
WPA Security
WPA security was not initially supported on XO laptops. If you are a knowledgeable Linux user, you can find instructions here to access the Internet with WPA security, by manually setting up WPA. It may be best for less experienced users to wait for the next stable XO software release, which should be available by the end of Janurary 2008. If you absolutely need WPA now, you can get it by performing an Upgrade to version 653, but in the process you may lose all data on your laptop.
MAC Filtering
Specific WAP Notes
A complete matrix of Wireless Access Point Compatibility is being updated by the support community.
Apple Airport
There are two kinds of Apple Access points: WEP and WPA. If you have WEP:
- Go to: http://www.corecoding.com/utilities/wep2hex.php and convert your password into a hex phrase.
- Click on the Access Point in the neighborhood view.
- Choose Hex input for the key; and choose "shared" key instead of "open".
- Enter your hex phrase.
- You should be able to associate to and authenticate a connection to an Apple Access point.
If you have WPA, you should note that WPA is not working from the User Interface in build 650. You should upgrade to build 653.
Verizon FIOS
The XO cannot see the wireless access point reliably and cannot connect to ActionTec M1424WR unless the router must be set up to use one channel exclusively (1-11) rather than rotate the channel selection
From a computer other than your XO:
- Go to your Browser, and type in 192.168.1.1
- Screen will open, and you will need to insert "User Name" and "Password." The Default response would be admin / password
- New screen will open. Along the top you will spot "Wireless Settings." Select that category.
- Along the left side you will see a column. Choose 'Basic Security Settings."
- Look for Section.....3. Channel: ______________ If it says "Automatic." it is rotating through eleven channels. Choose just one channel, preferably 1, 6, or 11.
- Click the "Apply" button.
Belkin Pre-N
Some access points that have reported intermittent problems with XOs:
- BelkinPreN - XO Connects but all other systems disconnect
If you have one of these access points, please contact technical support if none of the basic setup fixes solves your connection problem.
Linksys WRT54GX2
Some access points that have reported intermittent problems with XOs:
- Linksys WRT54GX2 - XO Connects but cannot access internet
If you have one of these access points, please contact technical support if none of the basic setup fixes solves your connection problem.
XO Setup
network.cfg
The network.cfg file contains information about the current network configuration from session to session.
If you want to remove any "memory" of connecting to a particular access point or if you change the configuration of your Access Point (such as adding or removing security features), then you will need to remove this file in order to get your XO to connect to the Access Point.
- Launch the Terminal Activity to delete the network manager config file by typing:
rm /home/olpc/.sugar/default/nm/networks.cfg (press "Enter")
Restart your XO laptop, or restart Sugar by pressing the Ctrl+Alt+Erase keys at the same time; your laptop will NOT automatically try to connect to the "known" access point.
Proxy Settings
The initial software build on the Give1Get1 shipped in December 2007 (Build 650) does not support a user interface to change the web browser by proxy settings. There is an outstanding bug (#2910) on this.
Troubleshooting Guide
The Wifi Troubleshooting Guide provides a step by step checklist to review prior to contacting Technical Support.