Hi I installed and was working with gnuradio for some time now. Suddenly from two days i find that my device is not being detected. I run uhd_find_devices or uhd_fft , I get uhd device not found. I checked my network connections and set sudo ifconfig eth0 192.168.10.1 and also checked that it's subnet mask is set to 255.255.255.0. But my eth 0 shows no received packets. I have attached the screenshot of it. when i try to run uhd_fft and uhd_find_devices it says no uhd device found.I have attached the screenshot of the same too. what could be the problem. I am sure the installation is right because my grc is opening and i worked on it a few days back.
on 2012-12-28 23:22
on 2012-12-28 23:29
In your screenshot, it looks like your eth0 ip address was lost. Tim Sent on the Sprint Now Network from my BlackBerry
on 2012-12-28 23:35
sorry, i uploaded the wrong screenshot. I have uploaded the right one here.
on 2012-12-29 17:41
I am getting the following output.. karan@karan-laptop:/usr/local/bin$ uhd_usrp_probe --args "addr=192.168.10.2" linux; GNU C++ version 4.4.3; Boost_104000; UHD_003.005.000-8-g49193c85 Error: LookupError: KeyError: No devices found for -----> Device Address: addr: 192.168.10.2 how i connected the setup is I powered my usrp n200 with the power cord. I connected an ethernet cable from usrp ethernet port to a gigabit ethernet switch and from the switch i am connecting an ethernet cable to my laptop's ethernet port.I also tried to connect the ethernet cable directly from usrp to my laptop. .It didn't change. Is it ok if ifconfig eth0 says Rx packets as 0?
on 2012-12-29 17:45
> addr: 192.168.10.2 > > how i connected the setup is I powered my usrp n200 with the power > cord. I connected an ethernet cable from usrp ethernet port to a > gigabit ethernet switch and from the switch i am connecting an > ethernet cable to my laptop's ethernet port.I also tried to connect > the ethernet cable directly from usrp to my laptop. .It didn't change. > Is it ok if ifconfig eth0 says Rx packets as 0? > Have you changed the FPGA/Firmware on the device? Are you sure that your host ethernet port isn't being managed by Netmanager with DHCP support? That will screw up up. Have you tried a different Ethernet cable? Is your laptop ethernet port 1GiGe capable? -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org
on 2012-12-29 18:07
Hi Marcus, I have not changed the fpga firmware. I used the build-gnuradio script to install gnuradio. I am not finding another ethernet cable in the lab. I will check that and let you know in some hours. My ethernet card in laptop is rtl 8101e. I checked that it is capable of only 100 Mbps. But here i am using a gigabit switch, so it shouldn't be a problem right. How should i check if my ethernet port is managed by netmanager with dhcp support? In my network connections it says auto eth0 for ethernet
on 2012-12-30 14:41
> oh suddenly it is working. i am able to run uhd_find_devices and > uhd_fft also. That's great. Thanks a lot Marcus. why did it suddenly > work? was it pinging it which helped? I'm suspecting that your gigabit switch has "funny" behaviour. > secondly when i am running uhd_fft i get this exception > > Using Volk machine: sse4_2_32 > thread[thread-per-block: <gr_block gr uhd usrp source (1)>]: caught > unrecognized exception > > Is it something i need to act on or is it just a warning.. > > Thanks again. It was very helpful. > What version of Gnu Radio are you running? Also, see the Gnu Radio pages about troubleshooting. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org
on 2012-12-30 14:44
I am using gnuradio 3.6.2. I will check the gnuradio pages and see. Thanks.