Okay, so was in zombie mode when I typed the command, but certainly was not expecting to get a segmentation fault.
The failing command was /usr/bin/python /usr/local/bin/uhd_fft --spec 'A:0 B:0' -f 924e6 Things worked fine with --spec 'A:0'. Below is the seg fault, reported in case there's anything serious behind it... This is from uhd git as of Feb. 2. Best Max ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Core was generated by `/usr/bin/python /usr/local/bin/uhd_fft --spec A:0 B:0 -f 924e6'. Program terminated with signal 11, Segmentation fault. #0 0x00007f43783f3276 in __convert_sc16_item16_usrp1_1_fc32_2_PRIORITY_GENERAL::operator()(uhd::ref_vector<void const*> const&, uhd::ref_vector<void*> const&, unsigned long) () from /usr/local/lib/libuhd.so.003 (gdb) i stack #0 0x00007f43783f3276 in __convert_sc16_item16_usrp1_1_fc32_2_PRIORITY_GENERAL::operator()(uhd::ref_vector<void const*> const&, uhd::ref_vector<void*> const&, unsigned long) () from /usr/local/lib/libuhd.so.003 #1 0x00007f43785ac2ac in usrp1_recv_packet_streamer::recv(uhd::ref_vector<void*> const&, unsigned long, uhd::rx_metadata_t&, double, bool) () from /usr/local/lib/libuhd.so.003 #2 0x00007f43789c1718 in uhd_usrp_source_impl::work(int, std::vector<void const*, std::allocator<void const*> >&, std::vector<void*, std::allocator<void*> >&) () from /usr/local/lib/libgnuradio-uhd-3.6.3git.so.0.0.0 #3 0x00007f437e846754 in gr_sync_block::general_work(int, std::vector<int, std::allocator<int> >&, std::vector<void const*, std::allocator<void const*> >&, std::vector<void*, std::allocator<void*> >&) () from /usr/local/lib/libgnuradio-core-3.6.3git.so.0.0.0 #4 0x00007f437e8284d6 in gr_block_executor::run_one_iteration() () from /usr/local/lib/libgnuradio-core-3.6.3git.so.0.0.0 #5 0x00007f437e849bf4 in gr_tpb_thread_body::gr_tpb_thread_body(boost::shared_ptr<gr_block>, int) () from /usr/local/lib/libgnuradio-core-3.6.3git.so.0.0.0 #6 0x00007f437e84319f in boost::detail::function::void_function_obj_invoker0<gruel::thread_body_wrapper<tpb_container>, void>::invoke(boost::detail::function::function_buffer&) () from /usr/local/lib/libgnuradio-core-3.6.3git.so.0.0.0 #7 0x00007f437e5782a5 in boost::detail::thread_data<boost::function0<void> >::run() () from /usr/local/lib/libgruel-3.6.3git.so.0.0.0 #8 0x00007f437dab2230 in thread_proxy () from /usr/lib/libboost_thread.so.1.42.0 #9 0x00007f43809ff971 in start_thread () from /lib/libpthread.so.0 #10 0x00007f437f8db92d in clone () from /lib/libc.so.6 #11 0x0000000000000000 in ?? ()
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