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Troubleshooting Q&A

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Shahaf, Ziv edited this page Aug 28, 2017 · 37 revisions

Wiki ▸ Troubleshooting Q&A

We've grouped together related questions for your convenience

Installation

Camera not working\detected

Git

Python

Installation Up ⬆️

Q: How do I enable librealsense logs?

To change the log level of LibRealSense logger, you need to set a local variable named LRS_LOG_LEVEL and initialize it with the desirable log level:

Linux:

$ export LRS_LOG_LEVEL="<Log Level>"

Windows:

> set LRS_LOG_LEVEL="<Log Level>"
  • A LibRealSense log will be created even when an application does not activate the LibRealSense logger.

Q: GCC Internal Error

The gcc compiler issues the following error while compiling:

gcc: internal compiler error

This might indicate that you do not have enough memory or swap space on your machine. Try closing memory consuming applications, and if you are running inside a VM increase available RAM to at least 2 GB.

Q: I ran the udev rules script but Linux still get Permission denied

First, try re-installing udev rules located in librealsense source directory: sudo cp config/99-realsense-libusb.rules /etc/udev/rules.d/ sudo udevadm control --reload-rules && udevadm trigger

If the issue persists, the cause might be due to the fact that your user is not part of the plugdev group.

Q: dmesg shows: uvcvideo: module verification failed: signature and/or required key missing - tainting kernel

This is a standard warning issued since Kernel 4.4-30+, it is only a notification and does not affect module's functionality.

Q: sudo modprobe uvcvideo produces dmesg: uvc kernel module is not loaded

This issue is caused since the patched module kernel version is incompatible with the resident kernel. Verify the actual kernel version with uname -r. Revert and proceed from Make Ubuntu Up-to-date step from the Linux installation guide.

Q: ubuntu-xenial.sh script fails with fatal error: openssl/opensslv.h

This is usually caused due to a missing dependency. Install openssl package from Video4Linux backend preparation step

Camera not working\detected Up ⬆️

Q: How do I see which Intel RealSense cameras are connected?

Linux:

$ lsusb | grep 8086

Windows:

  1. Click the Win-Key+X keys
  2. Choose Device Manager
  3. Look under Imaging devices for "Intel RealSense" cameras

Q: I connected the camera to the USB port but it is not recognized

❗️ Make sure your camera is connected using USB 3.0 ❗️

If your camera is connected via USB 3.0, check to make sure your OS detects the camera (how?). The camera will not work without USB 3.0 (or higher)

Q: I'm using a virtual machine and the camera is not working

Due to the USB 3.0 translation layer between native hardware and virtual machine, the librealsense team does not support installation in a VM. If you do choose to try it, we recommend using VMware Workstation Player, and not Oracle VirtualBox for proper emulation of the USB3 controller.

Q: Camera gets stuck\hangs on windows

Related issues: Issue #303, Issue #129

When working on Windows 8.1, make sure you have KB3075872 and KB2919355 installed.

These patches address issues with Windows 8.1 video drivers. They should be resolved in Windows 10.

Git Up ⬆️

Q: Git returns access timeout when I try to clone the repository

git.launchpad... access timeout

This usually happens when your computer is behind a firewall, try to configure git to use the appropriate proxy server

Python Up ⬆️

Q: CMake shows an error when I try to build with Python bindings

The following message appears:

Could NOT find PythonInterp (missing: PYTHON_EXECUTABLE)

Please check the following:

Python config failure: Python is 32-bit, chosen compiler is 64-bit

If this message appears you should install python 64 bit

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