Re: [Discuss-gnuradio] USRP2-No USRPs found on interface eth0

[Tim Pearce]

Immediately above "Traceback (most recent call last):" in the command window is there any error?

The most common I get are:

address@hidden:~$ usrp2_fft.py 
eth0: SIOCGIFINDEX: No such device

or

address@hidden:~$ usrp2_fft.py -e eth1
socket(PF_PACKET, SOCK_RAW, htons(0xBEEF)): Operation not permitted
eth1: socket: No such file or directory

----

In the former case for some reason my ubuntu install randomly changed eth0 to eth1 , run ifconfig and try:

usrp2_fft.py -e ethX

where X is the number listed in `ifconfig | grep eth`

If you get the second error for some reason usrp2_socket_opener has lost permissions (or you've been running as root when it worked in the past)

sudo chmod +s /usr/bin/usrp2_socket_opener

Should fix this problem.

Last idea is if you've tried the VRT firmware/gnuradio code on the other PC -- the control packets have changed in this release so wont work with stock git/packaged gnuradio versions.

Cheers,

Tim

On Wed, Jan 27, 2010 at 8:31 PM, Brook Lin <address@hidden> wrote:

Hi All,

I'm testing my USRP2. I run ./usrp2_fft.py and ./usrp2_wfm_rcv.py, both
worked fine. However, I got an error now, "RuntimeError: No USRPs found on
interface eth0". I didn't change anything on this computer. I connect the
USRP2 on another computer, all work fine. Could anyone advise me on how to
solve this problem? What causes this error? Thanks in advance.

-Brook

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