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

[Jorge Miguel]

Marcus,

I set permissions as you said:
     /usr/bin$ sudo chmod 4775 usrp2_socket_opener
However it does not fix the problem. Only when setting my Ethernet
interface to promiscuous mode with:
     sudo ifconfig eth0 promisc up
'find_usrps' does work perfectly.
If I execute
     sudo ifconfig eth0 -promisc
Again there is no connection with the USRP2

Is there any other file which needs permissions ?
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


>>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,
>>
>>
>