Trace/breakpoint trap on Debian, Python 3.8, Zivid 2.1.0

[mortlind]

I am on Debian with Python 3.8, and can install 2.1.0 core and telicam driver fine, and pip install zivid succeeds. But any attempt at getting the camera results in Trace/breakpoint trap. E.g. the standard example fails:

import zivid
app = zivid.Application()
camera = app.connect_camera()

Even the emulated camera fails:

>>> camera = app.create_file_camera("ZividSampleData2/FileCameraZividOne.zfc")
Trace/breakpoint trap

Is there any easy fix for this?

[eskaur]

Could you post a minimal but self-contained Python script that reproduces this error?

[mortlind]

Could you post a minimal but self-contained Python script that reproduces this error?

I posted the first three lines from the standard example. That is sufficient for me to generate the error.

[eskaur]

Ah, so to be clear, running either samples/sample_capture.py or samples/sample_capture_from_file.py fails with "Trace/breakpoint trap"?
Could you give me the output of python samples/sample_print_version_info.py (if it works)?

[mortlind]

I confirm that sample_capture.py and sample_capture_from_file.py fail the same way with "Trace/breakpoint trap". Following is the version info:

ml@lib13:~/install/zivid/zivid-python$ python samples/sample_print_version_info.py 
Python: 3.8.6
zivid-python: 2.0.0.2.1.0
Zivid SDK: 2.1.0+d2007e12-1
ml@lib13:~/install/zivid/zivid-python$ 

A further piece of information: When trying to get an interface to the camera, i.e. immediately following the statement camera = app.connect_camera(), the camera fan revs up. Hence, I do believe that connecting to the camera works.

[eskaur]

Thank you, that looks as it should.
What exact version of Debian are you running? I'd like to reproduce this problem myself.

lsb_release -a

[mortlind]

ml@lib13:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux bullseye/sid
Release:        testing
Codename:       bullseye
ml@lib13:~$ 

[mortlind]

And

ml@lib13:~$ uname -a
Linux lib13 5.9.0-1-amd64 #1 SMP Debian 5.9.1-1 (2020-10-17) x86_64 GNU/Linux

[eskaur]

Ah that's pretty bleeding-edge. Have you also tried with the latest stable Debian by any chance? (Debian 10 / Buster)

[mortlind]

I do not have a stable install around at the moment, but I will try out with a live install when I find the time.

[eskaur]

I may be able to test with Debian 10 myself soon.
May take a bit because we don't have a test-setup ready, since we don't officially support Debian.

Tip: Ubuntu is the officially supported (and most tested) distro for Zivid.

[mortlind]

I know that Ubuntu is the supported distribution. However, Debian is the free choice, and I will stretch a long way to get everything working on Debian :-)

The difference should be quite minor, so the errors may simply be due to implicit dependencies. If we discover, and express these in the installer, or just in the README, everything will be fine, I am sure ...

[eskaur]

Ubuntu is certainly free, at least in the no-cost sense.
Anyway, I would like for this to work on Debian (even if we don't "officially" support it), so I'm keen to investigate further.

[mortlind]

Ubuntu is free as "free beer" ... for now, and probably forever. But Debian is free as in "free mind". I do agree, however, that this latter part, relating to such things as freedom, liberty, and democracy, seems to matter less and less in the global tech-oligarchy we increasingly find ourselves :-(

[eskaur]

Moving on... :D
Does any of the core Zivid functionality work on your machine? Like Zivid Studio, CLI-tools or compiling+running C++ samples? Just want to make sure the issue lies with zivid-python.

[mortlind]

ZividStudio starts up, but crashes with the same error while trying to connect to the camera. Thus, this is not a zivid-python or Python 3.8 issue.
I have not tried any C++-application. Do you think that is worthwhile at this stage?