Re: [Discuss-gnuradio] [USRP-users] gnuradio-companion core dumped on _uhd_swig.so

[Marcus Müller]

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Hi Juan,
now I understand better what is going on. So before going to bed:
please correct me if I'm wrong:
* You had a working GNU Radio + UHD installation that suddenly stopped
working last week
* You installed this from the Ubuntu packages (?)
* Then you tried different source builds of GNU Radio and all crashed.

I don't know what caused this, but it could be a compatibility issue
between UHD headers and binary libraries.
In this case, the first step would be to make sure you have a clean
system: please uninstall all uhd and gnuradio builds and binaries and
try to make sure none of these installations linger.

Then: decide whether you want to go the self-built route or the binary
route. This decision might depend on the version of GR you want to
use: if you want to learn GNU Radio, use 3.7, but if you need to
support older code, you might want to go for 3.6.; you can't use
modules designed for 3.6 with 3.7.

Install then UHD + GNU Radio either from your package directories, or
install and build UHD und GNU Radio using pybombs simultaneously.

All the best,

Marcus

On 24.01.2014 23:39, Jun Tian wrote:
> Hi, all,
> 
> I  have found a similar post on gnuradio on  coredump on the same
> file and am wondering if there is already a solution. Suggestions
> will be greatly appreciated. See link:
> 
> http://gnuradio.4.n7.nabble.com/I-am-getting-a-Segmentation-fault-core-dumped-error-when-running-companion-td44743.html
>
>  I currently have a install of the following:
> 
> Official binaries for GNURADIO 3.7.2.1 and UHD
> 003.006.002-release. Ubuntu 13.10.
> 
> At one point last week  it was working  with gnuradio 3.6 and UHD
> 003.004.005 I believe as I downloaded the fpga and fw image.
> 
> I tried different source build of gnu  ( 3.6.1, 3.7.2) radio and it
> all crashed on the same spot.
> 
> I currently have a install of the following:
> 
> Official binaries for GNURADIO 3.7.2.1 and UHD
> 003.006.002-release. Ubuntu 13.10.
> 
> I rewound back to UHD host driver 3.4.2-1build1 and it did not
> solve the problem.
> 
> Thanks, Jun.
> 
> import gnuradio.qtgui.qtgui_swig # precompiled from
> /usr/lib/python2.7/dist-packages/gnuradio/qtgui/qtgui_swig.pyc 
> dlopen("/usr/lib/python2.7/dist-packages/gnuradio/qtgui/_qtgui_swig.so",
> 2); import _qtgui_swig # dynamically loaded from
> /usr/lib/python2.7/dist-packages/gnuradio/qtgui/_qtgui_swig.so 
> import gnuradio.trellis # directory
> /usr/lib/python2.7/dist-packages/gnuradio/trellis #
> /usr/lib/python2.7/dist-packages/gnuradio/trellis/__init__.pyc
> matches
> /usr/lib/python2.7/dist-packages/gnuradio/trellis/__init__.py 
> import gnuradio.trellis # precompiled from
> /usr/lib/python2.7/dist-packages/gnuradio/trellis/__init__.pyc #
> /usr/lib/python2.7/dist-packages/gnuradio/trellis/trellis_swig.pyc
> matches
> /usr/lib/python2.7/dist-packages/gnuradio/trellis/trellis_swig.py 
> import gnuradio.trellis.trellis_swig # precompiled from
> /usr/lib/python2.7/dist-packages/gnuradio/trellis/trellis_swig.pyc 
> dlopen("/usr/lib/python2.7/dist-packages/gnuradio/trellis/_trellis_swig.so",
> 2); import _trellis_swig # dynamically loaded from
> /usr/lib/python2.7/dist-packages/gnuradio/trellis/_trellis_swig.so 
> import gnuradio.uhd # directory
> /usr/lib/python2.7/dist-packages/gnuradio/uhd #
> /usr/lib/python2.7/dist-packages/gnuradio/uhd/__init__.pyc matches
> /usr/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py import
> gnuradio.uhd # precompiled from
> /usr/lib/python2.7/dist-packages/gnuradio/uhd/__init__.pyc #
> /usr/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.pyc matches
> /usr/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py import
> gnuradio.uhd.uhd_swig # precompiled from
> /usr/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.pyc 
> dlopen("/usr/lib/python2.7/dist-packages/gnuradio/uhd/_uhd_swig.so",
> 2); # /usr/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.pyc
> matches /usr/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py 
> import gnuradio.uhd.uhd_swig # precompiled from
> /usr/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.pyc 
> dlopen("/usr/lib/python2.7/dist-packages/gnuradio/uhd/_uhd_swig.so",
> 2); Segmentation fault (core dumped)
> 
> 
> 
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