Arch Linux

Myshkin

Member

From: Tanzania

Registered: 2012-10-11

Posts: 38

Wireless problems with Linksys WUSB54GC

AFAIK, I've configured everything the way I did in the past using Debian,
but can't get it to see the network.  I have an HP Photosmart printer right
beside the computer that connected without any problem and was immediately
visible on the network, so I'm pretty sure the problem isn't with the router.

# lsusb
Bus 001 Device 006: ID 13b1:0020 Linksys WUSB54GC v1 802.11g Adapter [Ralink RT73]

# lsmod | grep rt73
rt73usb                22340  0
rt2x00usb               7816  1 rt73usb
rt2x00lib              32132  2 rt73usb,rt2x00usb
crc_itu_t               1095  1 rt73usb
usbcore               123954  6 usblp,uhci_hcd,rt73usb,rt2x00usb,ehci_hcd,usbhid

I used iwconfig to set the essid; used ifconfig wlan0 up to start it and
everything looks fine, but
# iwlist wlan0 scan
wlan0     No scan results

Trying to use wpa_supplicant resulted in repeated "No suitable network found."

Any ideas?

Strike0

Member

From: Germany

Registered: 2011-09-05

Posts: 1,491

Re: Wireless problems with Linksys WUSB54GC

You have to use "sudo" for scanning. Maybe it's just that ?
Try

sudo iw dev wlan0 scan 

Also check, you have the firmware loaded

Myshkin

Member

From: Tanzania

Registered: 2012-10-11

Posts: 38

Re: Wireless problems with Linksys WUSB54GC

Thanks for the reply, Strike0.  The "#" indicates that i was either root or sudo,
so that isn't it.

# iw dev wlan0 scan
returns nothing.  With --debug there are Sent messages and Received messages
so i assume something is communicating with something.

I temporarily remove WPA on the router so the problem isn't with wpa_supplicant.
Trying to force it with

# iw dev wlan0 connect <myssid>; iw dev wlan0 link
returns
"Not connected."  Since no AP shows up on the scan, this isn't surprising.
As a reminder, the printer right beside me does show <myssid>, so the
router is broadcasting.

I have firmware installed but don't know how to tell if it is loaded or how to make
it load.  I haven't been able to find any documentation on it.

Last edited by Myshkin (2012-10-18 13:19:06)

Strike0

Member

From: Germany

Registered: 2011-09-05

Posts: 1,491

Re: Wireless problems with Linksys WUSB54GC

Just grep dmesg/journalctl for "rt73" and it should show a line confirming the firmware has been loaded successfully.
Your lsmod looks fine, unless there are other conflicting modules which got filtered. 
You can see what happens when manually removing the module and loading it again and look, if that makes a change to scan results.

Last edited by Strike0 (2012-10-18 17:47:41)

Myshkin

Member

From: Tanzania

Registered: 2012-10-11

Posts: 38

Re: Wireless problems with Linksys WUSB54GC

Thanks again.
The only occurrences of "rt73" in dmesg are when loading the usb modules.  There is a rt73.bin in /lib/firmware but no indication it is being loaded.

# modprobe -r rt73usb
returns without errors and removes all the modules given by lsmod above.  Then
# modprobe rt73usb
and the lsmod statement above gives the same results as before, as does everything else.

Strike0

Member

From: Germany

Registered: 2011-09-05

Posts: 1,491

Re: Wireless problems with Linksys WUSB54GC

Too bad about the firmware. I have no further idea currently. Maybe you want to pull and re-plug the usb-device, then try to scan and post here the "everything.log" from the timestamp of pulling the device out.