Re: Radioconda 2022.09.22 released

[Ryan Volz]

Hi,

On 9/23/22 4:49 AM, Gisle Vanem wrote:

Ryan Volz wrote:


Radioconda 2022.09.22, including GNU Radio 3.10.4.0, is now available:

https://github.com/ryanvolz/radioconda/releases


Tried it with a random .qrc-file. But it crashed inside
Cairo. Call-stack:
   ucrtbase!abort+0x4e
   ucrtbase!common_assert_to_stderr_direct+0xb2
   ucrtbase!common_assert_to_stderr+0x1d
   ucrtbase!wassert+0x71
   cairo!cairo_surface_destroy+0x40
   cairo!cairo_font_options_status+0xc09
   cairo!cairo_debug_reset_static_data+0xb8
   cairo!cairo_destroy+0x48
   _cairo_cp310_win_amd64!PyInit__cairo+0xb48
   python310!_Py_Dealloc+0x7
   python310!_Py_DECREF+0xd
   python310!_Py_XDECREF+0xf
   ...

And from Cairo:
   Assertion failed: CAIRO_REFERENCE_COUNT_HAS_REFERENCE 
(&surface->ref_count),

   file cairo-surface.c, line 955


It looks like this has been reported before:

https://github.com/gnuradio/gnuradio/issues/2938

Are you only seeing this with the radioconda build of GNU Radio, but not 
otherwise? If so, that could help track down where the issue lies.




Any chance to have the .PDB-files on Windows?



Sorry, the conda-forge packages used in radioconda are not set up to 
build with or distribute debug symbols, so I think it would be quite the 
undertaking to do that generally. However, you might be able to take the 
recipe for a specific package (e.g. 
https://github.com/conda-forge/cairo-feedstock/tree/main/recipe), modify 
the bld.bat script to include building PDB files, and then build your 
own version of the package locally. Doing that probably requires some 
familiarity with conda and conda-build, but I'd be willing to give 
pointers if you get stuck on particular steps.


Cheers,
Ryan

Problems getting the N310 to send dvbs2 video to itself

[George Edwards]

Dear GNURadio Community!
I am sending an dvbs2 video file on an N310 radio in loopback from TX to RX
using QPSK modulation (using Ron's dvbs2 Github project). I keep getting
"Baseband header crc failed" no matter what I try. I attached a
Constellation Sink to the output of the UHD: USRP Source to observed the
qpsk constellation output to the LDPC Decoder. The Constellation is rotated
and during parts of the reception time there are more than 4 blobs with
blobs on the rotated I and Q axes and the origin. I have tried attenuating
the TX output signal entering the RX, I tried varying the symbol rate and
sample rate, but nothing worked.

Will appreciate any help provided to solve this problem.

Thank you!
George