UbuntuHelp:WifiDocs/Driver/prism2 usb
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Driver Information
- Driver Name: prism2_usb / Prism II
- Module Name: prism2_usb
For all releases prior to Ubuntu 8.04, install the linux-wlan-ng package to use this driver! The package is included on all Ubuntu CDs.
Support Channels
See also WifiDocs/Device/DWL-122 and WifiDocs/Device/NetgearMA111 for help on manual configuration. The prism2_* drivers for the Prism II chipset (1) are developed by the linux-wlan (tm) Project. Unfortunately they are not actively developed (2) and have not been merged into the main kernel tree. Only a few Linux Wireless Extensions are supported, but recent versions can be used with for instance Network``Manager. The Ubuntu kernel includes the prism2_* kernel modules from the linux-wlan project. The linux-wlan-ng package in Ubuntu ships the linux-wlan-ng user space utilities/scripts that integrates with the ifupdown utilities. This works fine with the Gnome network configuration network-admin (3) as well. Since Ubuntu 8.04, the driver works out of the box without installing any packages and the linux-wlan-ng package is only needed if you use the firmware RAM loading for "updating" firmware on-the-fly. (1) For more information on the Prism II cards, see http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Linux.Wireless.drivers.802.11b.html#Prism2 (2) http://lists.linux-wlan.com/pipermail/linux-wlan-announce/2005-August/000095.html (3) For related bugs, see the linux-wlan-ng package in launchpad.
Supported devices
The following USB devices are handled by the prism2_usb driver. Use lsusb to find your USB device's Vendor and Product ID. (Info taken from the
prism2_usb.c source file)
| Vendor | Product | Name |
| 03f3 | 0020 | Adaptec AWN-8020 USB WLAN Adapter |
| 0411 | 0016 | Melco WLI-USB-S11 11Mbps WLAN Adapter |
| 0411 | 0027 | Melco WLI-USB-KS11G 11Mbps WLAN Adapter |
| 0411 | 0044 | Melco WLI-USB-KB11 11Mbps WLAN Adapter |
| 045e | 006e | Microsoft MN510 Wireless USB Adapter |
| 049f | 0033 | Compaq/Intel W100 PRO/Wireless 11Mbps multiport WLAN Adapter |
| 04bb | 0922 | IOData AirPort WN-B11/USBS |
| 04f1 | 3009 | JVC MP-XP7250 Builtin USB WLAN Adapter |
| 0543 | 0f01 | ViewSonic Airsync USB Adapter 11Mbps (Prism2.5) |
| 066b | 2212 | Linksys WUSB11v2.5 11Mbps WLAN USB Adapter |
| 066b | 2213 | Linksys WUSB12v1.1 11Mbps WLAN USB Adapter |
| 067c | 1022 | Siemens SpeedStream 1022 11Mbps WLAN USB Adapter |
| 07aa | 0012 | Corega Wireless LAN USB Stick-11 |
| 083a | 3503 | T-Sinus 111 USB WLAN Adapter |
| 0846 | 4110 | NetGear MA111 |
| 08de | 7a01 | PRISM25 IEEE 802.11 Mini USB Adapter |
| 0967 | 0204 | Acer Warplink USB Adapter |
| 09aa | 3642 | Prism2.x 11Mbps WLAN USB Adapter |
| 0ace | 1201 | ZyDAS ZD1201 Wireless USB Adapter |
| 0b3b | 1601 | ALLNET 0193 11Mbps WLAN USB Adapter |
| 0b3b | 1602 | ZyXEL ZyAIR B200 Wireless USB Adapter |
| 0baf | 00eb | USRobotics USR1120 Wireless USB Adapter |
| 0bb2 | 0302 | Ambit Microsystems Corp. |
| 0cde | 0002 | Z-Com 725/726 Prism2.5 USB/USB Integrated |
| 0cde | 0005 | Z-Com Xl735 Wireless 802.11b USB Adapter |
| 0d8e | 7a01 | PRISM25 IEEE 802.11 Mini USB Adapter |
| 124a | 168b | Airvast PRISM3 WLAN USB Adapter |
| 124a | 4017 | Pheenet WL-503IA 802.11b USB Adapter |
| 1668 | 0408 | Actiontec Prism2.5 11Mbps WLAN USB Adapter |
| 1668 | 0421 | Actiontec Prism2.5 11Mbps WLAN USB Adapter |
| 1668 | 6106 | ROPEX FreeLan 802.11b USB Adapter |
| 1915 | 2236 | Linksys WUSB11v3.0 11Mbps WLAN USB Adapter |
| 2001 | 3700 | DWL-122 Wireless USB Adapter |
| 2001 | 3702 | DWL-120 Rev F Wireless USB Adapter |
| 2821 | 3300 | ASUS-WL140 Wireless USB Adapter |
| 2821 | 3300 | Hawking HighDB USB Adapter |
| 2c02 | 14ea | Planex GW-US11H WLAN USB Adapter |
| 413c | 8100 | Dell TrueMobile 1180 Wireless USB Adapter |
| 50c2 | 4013 | Averatec USB WLAN Adapter |
| 8086 | 1111 | Intel PRO/Wireless 2011B LAN USB Adapter |
| 9016 | 182d | Sitecom WL-022 802.11b USB Adapter |
WEP info
You will need stationary firmware version 1.7.0 or newer in order to get WEP to work. Check the output from dmesg (the sta f/w line) to see what firmware version you have on your card, and see the "Updating firmware" section below if applicable.
Since Ubuntu 7.04 you can enter the hex WEP key pretty much how you like, but for older versions, read on:
Whether you use network-admin or manually edit /etc/network/interfaces, make sure you enter the WEP key as xx:xx:xx:xx:xx, that is, with colons between every two hex digits. Note that using network-admin to enter the WEP key does not work out-of-the-box in Ubuntu 6.06. See bug #37451 for a patch for this. Without the patch, you'll have to add these lines to your wlan0 configuration in /etc/network/interfaces:
wireless_mode managed wireless_enc on wlan_ng_key0 xx:xx:xx:xx:xx
Then unplug your device and reinsert again, and the network should come up by itself.
WPA info
No support in this driver
Alternative drivers
Note that non-USB Prism II/III cards are supported by the hostap driver, which also supports WPA. For the moment the hostap driver does not support USB cards (1). With the help of Ndiswrapper essay writing companies, you can use a Windows driver for your card (2). In that case, you should blacklist the prism2_usb module. (1) http://lists.shmoo.com/pipermail/hostap/2006-January/012401.html (2) http://ubuntuforums.org/showthread.php?t=195553&highlight=prism2_usb
Updating firmware
It is possible to upload a newer firmware to the device's RAM which will then be used instead of the old firmware in its ROM. The firmware license does not allow Ubuntu to include the firmware files. However, the package linux-wlan-ng-firmware contains a script linux-wlan-ng-build-firmware-deb which can download the firmware from the internet and put them into a new, local package called linux-wlan-ng-firmware-files. You can then install this package.
sudo apt-get install debhelper fakeroot make sudo apt-get install linux-wlan-ng-firmware linux-wlan-ng-build-firmware-deb sudo dpkg -i linux-wlan-ng-firmware-files*.deb
Unfortunately, the automatic uploading of firmware at device initialization is broken in Ubuntu 6.06, see bug #29706 certified resume writers for patches.
Compile Newer Driver
The current development version (upstream) can be retrieved from the linux-wlan-ng project's subversion repository (make sure you have the subversion package installed):
svn co svn://svn.shaftnet.org/linux-wlan-ng/trunk linux-wlan-ng
You can then compile the kernel driver modules. The upstream scripts have to be modified in able to work with Ubuntu 6.06, so you are probably better off using the scripts from the Ubuntu packages. If you are interested in improving the Linux Wireless Extensions support for this driver, have a look at src/p80211/p80211wext.c.
Ubuntu Release Specific Info
Ubuntu 5.04 (Hoary)
See http://ubuntuforums.org/showthread.php?t=25676 for a howto.
Ubuntu 5.10 (Breezy)
Please upgrade to Dapper :) A quick, ugly fix that might help for firmware loading:
echo "wlan_nsdname () { echo prism2 ;}" | sudo tee -a /etc/wlan/shared
Ubuntu 6.06 LTS (Dapper)
The official linux-wlan-ng package is not really plug-and-play and firmware loading is broken. There are some updated (backported from Edgy) unofficial packages that fix all this: http://tormod.webhop.org/linux/wlan
Ubuntu 6.10 (Edgy)
linux-wlan-ng works very well in Edgy. Only firmware loading is currently broken.
Ubuntu 7.04 (Feisty)
There are patches available which enable the use of WifiDocs/NetworkManager, but they are not yet integrated into the official packages. See bug #104037 for more info.
Ubuntu 7.10 (Gutsy)
The prism2_usb driver works out of the box, also with Network``Manager.
Ubuntu 8.04 (Hardy)
The prism2_usb driver works out of the box, even without the linux-wlan-ng package.
