Tutorial: DLink DWL 122 on Gentoo

[lakerdonald]

Hey all,
I've got the D-Link DWL 122 USB Wireless card, and getting it to work on Linux was a pain, but after I figured out what was going on, I got it to work on gentoo fairly easily. Here's what you need:

-2.6.x kernel
-linux-wlan-ng-0.2.1-pre17 (it's not in the distfiles on the LiveCD, so you'll have to get it on your Gentoo Box somehow)
Place the linux-wlan-ng tarball in /usr/portage/distfiles, and run:

USE="usb -pci" emerge '=linux-wlan-ng-0.2.1-pre17'

Plug in the card

modprobe prism2_usb

wlanctl-ng wlan0 lnxreq_ifstate ifstate=enable
/etc/init.d/wlan start
dhcpcd wlan0

and you should be set.

[djfoobarmatt]

downloaded the latest ebuild from bugs.gentoo.org - it was up to pre26 today.

root@tyndale linux-wlan-ng # modprobe prism2_usb
root@tyndale linux-wlan-ng # tail /var/log/messages 
...
May 18 20:34:36 tyndale prism2usb_init: prism2_usb.o: 0.2.1-pre26 Loaded
May 18 20:34:36 tyndale prism2usb_init: dev_info is: prism2_usb
May 18 20:34:36 tyndale usbcore: registered new driver prism2_usb
root@tyndale linux-wlan-ng #

pluged in the card and got

May 18 20:36:58 tyndale usb 1-1.1: new full speed USB device using uhci_hcd and address 5
May 18 20:36:58 tyndale usb 1-1.1: device descriptor read/64, error -71
May 18 20:36:58 tyndale usb 1-1.1: device descriptor read/64, error -71
May 18 20:36:58 tyndale usb 1-1.1: new full speed USB device using uhci_hcd and address 6
May 18 20:36:58 tyndale usb 1-1.1: device descriptor read/64, error -71
May 18 20:36:58 tyndale usb 1-1.1: device descriptor read/64, error -71

but the next command fails.

wlanctl-ng lnxreq_ifstate ifstate=enable 
The cmd 'ifstate=enable' is invalid

looks like i need kernel options

root@tyndale NSLU2 # /etc/init.d/wlan restart 
 * Shutting Down WLAN Devices...
wlanctl-ng: No such device                                                [ ok ]
 * Starting WLAN devices...
FATAL: Module wlan0 not found.
Error: Device wlan0 does not seem to be present.
Make sure you've inserted the appropriate
modules or that your modules.conf file contains
the appropriate aliase(s).
wlanctl-ng: No such device
error: Autojoin indicated failure!                                        [ ok ]
root@tyndale NSLU2 #

[djfoobarmatt]

two more things. first, i plugged the card into the linux box (skipped the usb hub) result is more stuff in /var/log/messages.

second was to put s 'wlan0' in that command

root@tyndale linux # wlanctl-ng wlan0 lnxreq_ifstate ifstate=enable
\message=lnxreq_ifstate
  ifstate=enable
  resultcode=success

also put

alias wlan0 prism2_usb

in /etc/modules.d/aliases and did a modules-update.

strangely the init script is failing on the enable command which works from the command line!

[lakerdonald]

sorry I f**ked up on the tutorial. I forgot a couple command line deals.

[djfoobarmatt]

I deleted the firmware download part from /etc/wlan/shared just before it does the enable and that let it get through the /etc/init.d/wlan start script.

[djfoobarmatt]

my last step was to

ln -s /etc/init.d/net.eth0 /etc/init.d/net.wlan0

and

/etc/init.d/net.wlan0 restart

(I had also edited /etc/conf.d/net to setup wlan0)

I am now posting via my DWL-122!

yay

matt