Intel RealSense D455 Viewer not showing RGB and Motion Stream
I just installed the librealsense2 SDK. After opening the realsense viewer it immediately successfully performed a firmware update. Unfortunately in the viewer only the depth stream is working. RGB and motions streams fail and write the following messages on the shell:
04/01 17:20:15,416 WARNING [139918474991360] (backend-v4l2.cpp:1775) Invalid md size: bytes used = 0 ,start offset=10
04/01 17:20:39,363 WARNING [139919204800256] (sensor.cpp:989) HID timestamp not found, switching to Host timestamps.
Afterwards the viewer closed with a segfault error.
I'm using Ubuntu 18.04.5 LTS with 5.4.0-58-generic Kernel.
How can I get at least the RGB stream to work?
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Hi Urs What computer or computing device have you installed librealsense on please? (PC, Mac, Raspberry Pi, Nvidia Jetson, etc). Thanks!
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If you are using Ubuntu with a PC, I would recommend building librealsense from source code with CMake and the RSUSB installation method if you have not tried to do so already. This will help to eliminate whether the problem is being caused by a conflict with the Linux kernel. This is because an RSUSB installation of librealsense is not dependent on Linux versions or kernel versions and does not need patching. This installation method does require an internet connection though.
The instructions in the link below describe how to build librealsense and the Python wrapper together from source code.
https://github.com/IntelRealSense/librealsense/issues/6964#issuecomment-665650908
Leave out the CMake flag -DBUILD_WITH_CUDA:bool=true though as your ThinkPad likely does not have an Nvidia graphics chip.
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