Topic: iwlist: No scan results

I'm trying to follow the instructions here … fi_network to bring up wifi, but i get "No scan results" -- and I'm sitting right on top of the wifi router and my iPod finds it just fine, so it's not an RF problem.  The dongle is reported as an rt2800, but it seems to enumerate just fine when I plug it in.  What next?

Re: iwlist: No scan results

More information.

The Adafruit HowTo is written against an rt73 WiFi dongle.  They shipped me an RT2870 based dongle.  Reading dmesg makes me think that all is OK:

[   17.900000] Registered led device: rt2800usb-phy0::radio
[   17.910000] Registered led device: rt2800usb-phy0::assoc
[   17.920000] Registered led device: rt2800usb-phy0::quality
[   17.940000] usbcore: registered new interface driver rt2800usb
[   18.350000] rt2800usb 1-1.1:1.0: firmware: requesting rt2870.bin

And the devices shows up as wlan0 and produces iwconfig output.  But... googling around the net made me suspicious that there is some driver conflicts.  Some posts elsewhere lead me to believe that the 2870 does not work with the other 2x00 drivers, and requires it's own driver (rt2870.bin).  This output from lsmod looks suspicious:

chumby-:/ # lsmod
Module                  Size  Used by
ipv6                  268800  11 
stmp3xxx_rotdec         4440  0 
stmp378x_devb_rotdec     1696  1 stmp3xxx_rotdec
chumby_timer            3508  0 
i2c_dev                 6500  2 
rt2800usb              17888  0 
rt2800lib              26624  1 rt2800usb
rt2x00usb              11264  2 rt2800usb,rt2800lib
rt2x00lib              30496  2 rt2800lib,rt2x00usb
led_class               4196  1 rt2x00lib
compat_firmware_class     9000  1 rt2x00lib
mac80211              179940  2 rt2x00usb,rt2x00lib
cfg80211              135408  2 rt2x00lib,mac80211
rfkill_backport        21108  1 cfg80211
compat                  4416  2 mac80211,cfg80211
crc_ccitt               1984  1 rt2800usb
ehci_hcd               34160  0 
usbcore               138432  5 rt2800usb,rt2x00usb,compat,ehci_hcd
mousedev               12136  0 
joydev                 10176  0 
evdev                   9700  0 
stmp3xxx_ts             4932  0 
i2c_stmp378x            4768  1 
i2c_core               24080  2 i2c_dev,i2c_stmp378x
chumby_bend             5092  0 
stmp3xxx_wdt            4528  1 

I've seen where people on Ubuntu and Suse have been blacklisting the rx2x00 modules so that the rt2870 module loads.  I'm not exactly sure that is the fix here, but it seems like it is worth a try.  How do I blacklist a module in Chumy's linux?  I don't see an /etc/modeprobe.d/ directory.


Re: iwlist: No scan results

Anyone figured out how to make the RT2870 module work?
I too have one of these that Adafruit shipped to me.


Re: iwlist: No scan results


A new driver is available and works with the RT2800 based module.

see: … 85#p103385