I have a Usb Wlan adapter with Zydas 1201. I am using Slackware 10.1 with kernel 2.6.10, and the drivers form http://linux-lc100020.sourceforge.net/ .
When I plug the usbwlan dongle the zd1201 module is loaded, the firmware is loaded (everything with hotplug).
lsusb -v finds the adapter.
But there is no wlan0. When I do ifconfig -a no wlan0 appears.

Suggestions?

what does iwconfig say?

iwconfig says:

lo no wireless extensions.

eth0 no wireless extensions.

eth1 no wireless extensions.

sit0 no wireless extensions.


I think the modules are allright because I use the zd1201 drivers in windows, and lsmod says:

Module Size Used by
ipv6 230016 10
uhci_hcd 29968 0
zd1201 20996 0
ohci_hcd 18824 0
ehci_hcd 28804 0
nvsound 1537080 1
eth1394 17672 0
soundcore 7136 2 nvsound
nvnet 67620 0
shpchp 96868 0
bt878 8760 0
tuner 20772 0
bttv 145232 1 bt878
video_buf 17156 1 bttv
firmware_class 7552 2 zd1201,bttv
i2c_algo_bit 9096 1 bttv
v4l2_common 4864 1 bttv
btcx_risc 3976 1 bttv
i2c_core 18064 3 tuner,bttv,i2c_algo_bit
videodev 7296 1 bttv
ohci1394 30724 0
ieee1394 92472 2 eth1394,ohci1394
nvidia 3704964 12
nls_utf8 1792 1
ntfs 177168 1
evdev 7552 0
agpgart 28328 1 nvidia
psmouse 20104 0

I was wrong, the firmware does not load correctly, this is what dmesg says:

Failed to load zd1201.fw firmware file!
zd1201 firmware upload failed: -2
zd1201: probe of 2-3:1.0 failed with error -2
usbcore: registered new driver zd1201

I made it work after rmmod and modprobe several times, and changing the usb socket. But its a question of luck. I think it is a problem with hotplug. I have nvidia chipset (for the usb core)