Sementation fault about librealsense HOT 31 CLOSED

Hi @jiaqizheng2000 Have you installed the librealsense SDK on your Linux 11 (Bullseye) computer, please?

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Yes, I have installed it following https://dev.intelrealsense.com/docs/compiling-librealsense-for-linux-ubuntu-guide#prerequisites

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and I can open it by command realsense-viewer, and see the image

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Is your Python program a pyrealsense2 one? If it is, have you installed the RealSense pyrealsense2 wrapper after you installed librealsense?

On a PC computer you can install the pyrealsense2 wrapper with the command pip install pyrealsense2

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I have installed pyrealsense2

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is there some problem with VERSION="11 (bullseye)"? Do I need to change to Buster? Will it work?

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The Raspberry Pi version of Bullseye does not work with RealSense, while Buster does.

I do not know whether the Debian Bullseye has the same problem though.

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ok, I will try The Raspberry Pi version of Buster to see whether it works. Could you send me a guidance or just need to do the same process as before.

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There is an installation guide at the link below, though it is old and so you may need to edit the deb9u1 part of the command below so it is deb10u1 (Buster) instead.

gcc version 6.3.0 20170516 (Raspbian 6.3.0-18+rpi1+deb9u1)

https://github.com/IntelRealSense/librealsense/blob/master/doc/installation_raspbian.md

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ok, thank you very much, I will try it tomorrow

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E: Unable to locate package libglui-dev
E: Unable to locate package libglui2c2

There are two errors when I install the package, I just skip them, does they matter?

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I believe that these packages are related to GLFW graphics support and are installed when using Ubuntu 18. 20 and 22. So they may not be necessary on your Debian based installation.

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Ok,thanks.

And I also have some issues with protobuf.
when I run ./autogen.sh, it shows as below.

• autoreconf -f -i -Wall,no-obsolete
  configure.ac:30: error: possibly undefined macro: AC_PROG_LIBTOOL
  If this token and others are legitimate, please use m4_pattern_allow.
  See the Autoconf documentation.
  autoreconf: /usr/bin/autoconf failed with exit status: 1

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The protobuf version in the instructions is very old because the guide is old. Using protobuf v3.14.0 instead of v3.5.1 may work better for you.

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ok, and I have installed pyrealsense2 following the guide, but when I import pyrealsense2, it still shows no module named pyrealsense2

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Does it make a difference if you use import pyrealsense2.pyrealsense2 as rs instead of import pyrealsense2 as rs

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No, it doesn't work. And I saw some online guide said that need to move some *.so、so.2、so.2.50、so.2.50.0 file to /usr/lib/python3 from librealsense/build/wrappers/python, but I didn't see them when I have done pyrealsense2 installation.

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Do you have any files with the ending .so in the build/wrappers/python folder, please?

As you are using Python 3, the pyrealsense2.so file will have a complex auto-generated filename based on the Python 3 version that you are using. So if Python 3.7 was being used then the pyrealsense2.so file might have a filename like pyrealsense2.cpython-37m-arm-linux-gnueabihf.so

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No，I didn't find any files ending with .so in the librealsense/build/wrappers/python folder

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If you run pip install pyrealsense2 again and then try your manage.py program, do you still get the segmentation fault?

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when I run pip install pyrealsense2, or pip3 install pyrealsense2, it will raise the error:

Could not find a version that satisfies the requirement pyrealsense2 (from versions: )
No matching distribution found for pyrealsense2

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Which Python 3 version are you using, please? That pip install error could occur if a Python 3 version older than 3.7 (such as 3.6) was being used.

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Is your computer a desktop / laptop PC or does it use Arm architecture? If it is based on Arm then the minimum Python requirement for pip install would be 3.9 instead of 3.7.

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I've had previous reports that the Arm files of pip install pyrealsense2 work with Arm in general but not Raspberry Pi in particular, so that may be the reason why pip install is not working for you. In that case, building pyrealsense2 from source code would be the only option, unfortunately.

You have already tried building the wrapper from source on your Pi, but it is not clear why the .so files are not being generated in the build/wrappers/python folder. You do not seem to be doing anything incorrect.

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Ok，thanks for your kind help.

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Hi @jiaqizheng2000 Do you require further assistance with this case, please? Thanks!

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No，thanks

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You are very welcome. Thanks very much for the update!

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