Re: [Discuss-gnuradio] find_usrps only succeed when an sniffer is ON

[Marcus D. Leech]

On 09/07/2010 03:12 PM, Jorge Miguel wrote:
> Thanks for your quick answer. A problem with a firewall was an idea
> that also came to my mind but I disabled the Ubuntu firewall with the
> command "sudo ufw disable" so that no firewall is running into my
> machine and the USRP2-Host computer connection is made directly with a
> 1 Gb ethernet wire.
>
> Furthermore there were no errors during the installation of the
> software (via package manager).I run out of ideas....any suggestion?
>
> Jorge.
>
> On 09/07/2010 04:43 AM, Jorge Miguel wrote:
>   
>> I installed GNU Radio on a ThinkPad Lenovo T4410 under Ubuntu 10.04.
>> After connecting the USRP2 with the original Ettus code on the SD card
>> D and F LEDs are ok and when executed:
>>
>> ~$ sudo find_usrps
>> No USRP2 found.
>>
>> I run wireshark or tcpdump to see what happens in my network and I got:
>>
>> ~$ sudo find_usrps
>> 00:50:c2:85:35:a2 hw_rev = 0x0400
>>
>> If I stop the sniffer, I get again:
>>
>> ~$ sudo find_usrps
>> No USRP2 found.
>>
>> My problem is that 'find_usrps' only works when a sniffer is running.
>> How can it be explained?
>>
>> Jorge,
>>
>>     
>
What are the permissions on:

/usr/local/bin/usrp2_socket_opener


They need to be 4755 in order for non-privileged apps to work correctly
with the raw ethernet interface.

-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org