Erik Silva

OpenLTE 20.5 under Ubuntu 14.04.5 (Polarssl) and B210 runs better than under Ubuntu 16.04. It lasts longer until the SEGMENTATION FAULT. The OpenLTE host pings the UE for a while before the SEGMENTATION FAULT. The ping from the EnodeB to UE (10.0.0.2) lasts for some seconds.

I tried mbedtls and the UE just connects. With no traffic at all there will be no SEGMENTATION FAULT. I will install an older UBUNTU with Polarssl and the newest release toc check the SEG FAULT.

I have some seconds of succes! Two UEs are authenticated and got the address 10.0.0.2 and 10.0.0.3 they got some UDP packets and then SEG FAULT! Attached is the Wiresharck screen of the traffic between one UE and the Internet as captured on the OpenLTE pcap file. You can see clearly that the UE does two DNS searches and got the addresses from connectivitycheck.gstatic.com and www.google.com.

Thanks Mr. Robert Steve for your valuable information. The OpenLTE 20.5 isn't working with USRP B210, it crashes with segmentation fault. Is there anybody with a succesful running 20.5 with USRP B210 config? Thanks Erik

I have no problem to make the version v00_20-05 installation and config. I use two different machines and two differents Ubuntu versions but the new release continues to crash with segmentation fault. An Intel i5 with Ubuntu 14.04 and an Intel i7 with Ubuntu 16.04. Sometimes I send a couple of pings and the "segmentation fault" occurs in about 4 seconds. When I use version v00_20-04 no ping has response and nothing happens. It is possible a iptables error? Is anything I can check?

Thanks Mr. Jeremy Quirke it solved my troubles with connections. All the times the UE are conneting after the rar.tpc_command was changed to 8db.

I succeeded on ping the UE (a Nexus 5) at 10.0.0.2 sometimes for five seconds at most, then segmentation fault cancels OpenLTE. The segmentation fault is occuring with Ubuntu 14.04 and 16.04, I tried with differents cables and B210 combinations. The valgrind tool shows something.

The same is happening with my openlte_v00-20-05. installation. Even changing the B210 and using another host to run.