Re: Ho to use Limesdr and rtl dongles with GNURadio 3.8.2

[Christophe Seguinot]

Thanks Paul

This in fact is an important information.

To resume I found that following packages installed from source under Ubuntu 20.04 (compiling some of them is tricky) are fully functionnal with GNURadio 3.8.2:

• librtlsdr
  
• gr-osmosdr
• gr-limesdr (LimeSuite can be installed from ubuntu repository)
• gqrx (if you want both GNU Radio AND gqrx)
  
• gr-rds

For all these packages, installing from existing PPA (ubuntu and myriadrf repositories) breaks GNU Radio.

Regards

On 27/08/2020 12:44, Paul Boven wrote:

> Hi
>       Christophe,
>       
>       
>       This is unfortunately a known problem. The way GNU Radio was
>       packaged in Ubuntu 20.04 is (to me) a bit odd, with the version
>       number as part of the package name for most of the libraries.
>       
>       
>       If you install GR from the PPA, you will now get version 3.8.2,
>       which is great. This will also include all the libraries. But if
>       you then try to install a package from the regular Ubuntu
>       repository, e.g. gr-osmosdr, this will pull in gnuradio-3.8.1
>       libraries. So now you end up with two versions of the gnuradio
>       libraries installed on your system. Your gr-osmosdr (from the
>       Ubuntu repositories) is linked against the 3.8.1 versions of the
>       libraries, whereas the gnuradio on your system links against the
>       3.8.2 version of the libraries. Then, when you try to use the two
>       together, mayhem ensues.
>       
>       
>       The result of this, is that the 3.8.2 on the PPA only works with
>       itself, but not with the other packages from the regular Ubuntu
>       LTS release. Unfortunately, the PPA is simply broken at this time.
>       
>       
>       Fixing this is not easy, because to solve the root cause, we'd
>       have to figure out how to properly package GR for Ubuntu, and then
>       convince Ubuntu to upgrade the version of GNU Radio (and all
>       dependent packages!) that are part of the stable release.
>       
>       
>       Regards, Paul Boven.
>       
>       
>       On 8/27/20 12:25 PM, Christophe Seguinot wrote:
>       
> > Hi
> >         
> >         
> >         I recently switched my computer to Ubuntu 20.04 and installed
> >         GNURadio 3.8.2.0 from ppa
> >         (http://ppa.launchpad.net/gnuradio/gnuradio-releases/ubuntu).
> >         Version 3.8.2 is the latest in this PPA and is installed by
> >         default.
> >         
> >         
> >         I also installed gr-osmosdr gr-limesdr and gr-rds using sudo apt
> >         install.
> >         
> >         
> >         Gnuradio is running fine in most cases. However, each time I run
> >         a flowgraph involving  SDR or LimeSDR Dongle I get the classical
> >         error:
> >         
> >         
> >              File "/home/-----/rds_rx.py", line 571, in __init__
> >         
> >                  self.audio_sink_1 = audio.sink(audio_rate, '', True)
> >         
> >              AttributeError: 'int' object has no attribute 'sink'
> >         
> >         
> >         Looking into library folder /usr/lib/x86_64-linux-gnu I found
> >         that some 3.8.1.1 and 3.8.0 libraries are installed and probably
> >         conflicting with 3.8.2.0 libraries. For example, command/ll
> >         libgnuradio-runtime*/ gives
> >         
> >         
> >              lrwxrwxrwx 1 root root      28 aug.  22 14:29
> >         libgnuradio-runtime.so -> libgnuradio-runtime.so.3.8.2
> >         
> >              lrwxrwxrwx 1 root root      30 juil. 31 15:23
> >         libgnuradio-runtime.so.3.8.1 ->
> >         libgnuradio-runtime.so.3.8.1.0
> >         
> >              -rw-r--r-- 1 root root 1077632 juil. 31 15:23
> >         libgnuradio-runtime.so.3.8.1.0
> >         
> >              lrwxrwxrwx 1 root root      30 aug.  22 14:29
> >         libgnuradio-runtime.so.3.8.2 ->
> >         libgnuradio-runtime.so.3.8.2.0
> >         
> >              -rw-r--r-- 1 root root 1077632 aug.  22 14:29
> >         libgnuradio-runtime.so.3.8.2.0
> >         
> >         
> >         It looks like 3.8.1 and 3.8.0 libraries have been installed when
> >         installing gr-osmosdr gr-limesdr and gr-rds
> >         
> >         
> >              installed libraries during gr-osmosdr install
> >         
> >         
> >                  libgnuradio-audio.so.3.8.1
> >         
> >         
> >                  libgnuradio-blocks.so.3.8.1
> >         
> >         
> >                  libgnuradio-pmt.so.3.8.1
> >         
> >         
> >                  libgnuradio-runtime.so.3.8.1
> >         
> >         
> >                  libgnuradio-fcdproplus.so.3.8.0
> >         
> >         
> >                  libgnuradio-iqbalance.so.3.8.0
> >         
> >         
> >                  ilbgnuradio-uhd.so.3.8.0
> >         
> >         
> >                  ibgnuradio-fosphor.so.3.8.0
> >         
> >         
> >              installed libraries during gr-rds install
> >         
> >         
> >                  libgnuradio-analog.so.3.8.1
> >         
> >         
> >                  libgnuradio-digital.so.3.8.1
> >         
> >         
> >                  libgnuradio-filter.so.3.8.1
> >         
> >         
> >         
> >         I also notice that gr-osmosdr and gr-limesdr depend on
> >         libgnuradio-xxx  >= 3.8.1.0~rc1. So I don't understand why
> >         3.8.1 libraries have been installed after 3.8.2 libraries
> >         
> >         
> >         Here are my questions:
> >         
> >         
> >           * Is the existence of these multiple libraries versions the
> >         cause of
> >         
> >             errors?
> >         
> >           * Could someone please provide some link to PPA or source to
> >         compile
> >         
> >             (for gr-osmosdr and gr-limesdr) which are compatible with
> >         GNURadio
> >         
> >             3.8.2.0?
> >         
> >           * Should I reverse to GNURadio 3.8.1 using PPA
> >         
> >             http://ppa.launchpad.net/gnuradio/gnuradio-releases/ubuntu?
> >         
> >         
> >         
> >         
> >         Regards, Christophe
> >         
> >         
> >         
> >       
>       
>       
>