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L515 map_device_descriptor Cannot open /dev/video Last Error No such device #10570

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rancheng opened this issue Jun 8, 2022 · 10 comments
Closed

L515 map_device_descriptor Cannot open /dev/video Last Error No such device #10570

rancheng opened this issue Jun 8, 2022 · 10 comments
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l500 Linux

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@rancheng
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rancheng commented Jun 8, 2022

Required Info
Camera Model L515
Firmware Version 01.05.08.01
Operating System & Version Ubuntu18.04
Kernel Version (Linux Only) 5.4.0-113-generic
Platform PC
SDK Version 2.50.0-0~realsense0.6127
Language C++
Segment Robot

Issue Description

I was trying to retrieve color image and imu data to do camera-imu calibration. I wrote my code based on TUM-basalt, you can find the code from here:

https://github.com/rancheng/basalt-mirror/blob/master/src/rs_l515_record.cpp

When run the program, it always stuck at first frame and prompt the following error:

 08/06 11:43:00,485 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,487 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,488 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,588 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,588 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,588 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,688 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,688 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,688 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,789 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,789 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,789 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,889 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,889 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,889 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,989 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,989 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,989 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:01,090 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:01,090 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:01,090 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:01,190 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory

I tried to use INFRARED only, and made sure the config for streams are all valid.

you can follow the basalt official build instruction and install gcc9 to build the project:

sudo apt-get update && apt-get install -y wget gnupg lsb-release software-properties-common && apt-get clean all
sudo apt-get update && sudo apt-get install -y wget gnupg lsb-release software-properties-common && apt-get clean all
sudo apt-get update && sudo apt-get install -y wget gnupg lsb-release software-properties-common
wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key| apt-key add -
sudo wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key| apt-key add -
sudo wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key| sudo apt-key add -
echo "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-11 main" > /etc/apt/sources.list.d/llvm11.list
sudo echo "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-11 main" > /etc/apt/sources.list.d/llvm11.list
sudo echo "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-12 main" > /etc/apt/sources.list.d/llvm12.list
sudo echo "deb http://apt.llvm.org/bionic/llvm-toolchain-bionic-11 main" > /etc/apt/sources.list.d/llvm11.list
sudo echo "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-11 main" >> /etc/apt/sources.list.d/llvm11.list
sudo gedit /etc/apt/sources.list.d/llvm11.list
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-key F6E65AC044F831AC80A06380C8B3A55A6F3EFCDE
sudo add-apt-repository "deb https://librealsense.intel.com/Debian/apt-repo $(lsb_release -cs) main" -u
sudo apt-get install -y cmake git libtbb-dev libeigen3-dev libglew-dev ccache libjpeg-dev libpng-dev openssh-client liblz4-dev libbz2-dev libboost-regex-dev libboost-filesystem-dev libboost-date-time-dev libboost-program-options-dev libopencv-dev libpython2.7-dev libgtest-dev lsb-core gcovr ggcov lcov librealsense2-dev librealsense2-gl-dev librealsense2-dkms librealsense2-utils doxygen graphviz libsuitesparse-dev clang-11 clang-format-11 clang-tidy-11 clang-12 clang-format-12 clang-tidy-12 g++-9 libfmt-dev && apt-get clean all
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 60 --slave /usr/bin/g++ g++ /usr/bin/g++-9
gcc --version
g++ --version

Then build the project

git clone --recursive https://github.com/rancheng/basalt-mirror.git
cd basalt-mirror
./scripts/install_deps.sh
mkdir build
cd build
cmake .. -DCMAKE_BUILD_TYPE=RelWithDebInfo
make -j8

To run the program please do the following:

basalt_rs_l515_record --dataset-path ~/l515_calib_data/ --manual-exposure
@rancheng
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rancheng commented Jun 8, 2022

This is the full running log of the program and a gui attached:

image

/home/ran/CLionProjects/basalt-mirror/cmake-build-debug/basalt_rs_l515_record --dataset-path /home/ran/basalt_ds/ --manual-exposure
Sensor L500 Depth Sensor. Supported options:
	Visual Preset
	Frames Queue Size
	Error Polling Enabled
	Depth Units
	Inter Cam Sync Mode
	LDD temperature
	Mc Temperature
	Ma Temperature
	Global Time Enabled
	Apd Temperature
	Depth Offset
	Freefall Detection Enabled
	Sensor Mode
	Host Performance
	Humidity Temperature
	Enable Max Usable Range
	Alternate IR
	Noise Estimation
	Enable IR Reflectivity
	Digital Gain
	Laser Power
	Confidence Threshold
	Min Distance
	Receiver Gain
	Post Processing Sharpening
	Pre Processing Sharpening
	Noise Filtering
	Invalidation Bypass
Sensor RGB Camera. Supported options:
	Backlight Compensation
	Brightness
	Contrast
	Exposure
	Gain
	Hue
	Saturation
	Sharpness
	White Balance
	Enable Auto Exposure
	Enable Auto White Balance
	Frames Queue Size
	Power Line Frequency
	Auto Exposure Priority
	Global Time Enabled
	Host Performance
Sensor Motion Module. Supported options:
	Frames Queue Size
	Enable Motion Correction
	Global Time Enabled
Device Intel RealSense L515 connected
Enabling manual exposure control
got calib
Skipping gyro data. Timestamp before the first accel measurement.Skipping gyro data. Timestamp before the first accel measurement.Skipping gyro data. Timestamp before the first accel measurement.frame set size: 1
frame count: 1
Timestamp / exposure 0: 152123618000 / 499ms
done img data reading ...
 08/06 11:43:00,485 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,487 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,488 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,588 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,588 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,588 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,688 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,688 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,688 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,789 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,789 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,789 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,889 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,889 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,889 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,989 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,989 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:00,989 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:01,090 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:01,090 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:01,090 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 11:43:01,190 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,190 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,190 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,290 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,290 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,290 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,390 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,390 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,390 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,490 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,490 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,490 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,590 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,591 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,591 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,691 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,691 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,691 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,791 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,791 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,791 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,891 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,891 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,891 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,991 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,991 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:01,991 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,091 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,091 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,091 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,191 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,191 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,191 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,292 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,292 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,292 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,392 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,392 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,392 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,492 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,492 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,492 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,592 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,592 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,592 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,692 ERROR [140013064918784] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,692 ERROR [140013064918784] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 11:43:02,692 ERROR [140013064918784] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory

@MartyG-RealSense
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Hi @rancheng Could you please first try unplugging the micro-sized end of the USB cable from the base of your L515 camera, turning the connector around the opposite way and re-inserting it into the base of the camera (USB-C cables are two-way insertion at the micro-sized end). Do you still experience the errors with the connector reversed, please?

@rancheng
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rancheng commented Jun 8, 2022

thanks for your quickly reply @MartyG-RealSense , unfortunately the problem still exists after reverse the micro-sized end of USB cable.

I tried to open the realsense-viewer and it appears to be normal:

image

The error log is as following:

 08/06 20:19:18,885 ERROR [140502959625984] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:18,885 ERROR [140502959625984] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:18,885 ERROR [140502959625984] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:18,985 ERROR [140502959625984] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:18,985 ERROR [140502959625984] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:18,985 ERROR [140502959625984] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:19,086 ERROR [140502959625984] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:19,086 ERROR [140502959625984] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:19,086 ERROR [140502959625984] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:19,186 ERROR [140502959625984] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:19,186 ERROR [140502959625984] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:19,186 ERROR [140502959625984] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:19,286 ERROR [140502959625984] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:19:19,286 ERROR [140502959625984] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device

@rancheng
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rancheng commented Jun 8, 2022

I have also commented out the Pangolin side to diagnose the issue part.

The problem happens immediately after first color frame was read.

@rancheng
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rancheng commented Jun 8, 2022

I also tried to do nothing in callback just print the strings it also prompt this error:

else if (frame.get_profile().stream_type() == RS2_STREAM_COLOR) {
      std::cout << "color frame ..." << std::endl;
      /*
      ...
      */
}

@rancheng
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rancheng commented Jun 8, 2022

This is the corresponding error log, the motion frame looks good, but when the second color frame comes it hit the exception and halt the thread.

/home/ran/CLionProjects/basalt-mirror/cmake-build-debug/basalt_rs_l515_record --dataset-path /home/ran/basalt_ds/ --manual-exposure
Sensor L500 Depth Sensor. Supported options:
	Visual Preset
	Frames Queue Size
	Error Polling Enabled
	Depth Units
	Inter Cam Sync Mode
	LDD temperature
	Mc Temperature
	Ma Temperature
	Global Time Enabled
	Apd Temperature
	Depth Offset
	Freefall Detection Enabled
	Sensor Mode
	Host Performance
	Humidity Temperature
	Enable Max Usable Range
	Alternate IR
	Noise Estimation
	Enable IR Reflectivity
	Digital Gain
	Laser Power
	Confidence Threshold
	Min Distance
	Receiver Gain
	Post Processing Sharpening
	Pre Processing Sharpening
	Noise Filtering
	Invalidation Bypass
Sensor RGB Camera. Supported options:
	Backlight Compensation
	Brightness
	Contrast
	Exposure
	Gain
	Hue
	Saturation
	Sharpness
	White Balance
	Enable Auto Exposure
	Enable Auto White Balance
	Frames Queue Size
	Power Line Frequency
	Auto Exposure Priority
	Global Time Enabled
	Host Performance
Sensor Motion Module. Supported options:
	Frames Queue Size
	Enable Motion Correction
	Global Time Enabled
Device Intel RealSense L515 connected
Enabling manual exposure control
got calib
motion frame ...
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#################### color frame ... 
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 08/06 20:43:00,575 ERROR [139905187436288] (librealsense-exception.h:52) set_xu(...). xioctl(UVCIOC_CTRL_QUERY) failed Last Error: Protocol error
 08/06 20:43:00,575 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: set_xu(...). xioctl(UVCIOC_CTRL_QUERY) failed Last Error: Protocol error
 08/06 20:43:00,675 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,676 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,676 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,776 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,776 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,776 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,876 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,876 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,876 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,977 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,977 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:00,977 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:01,077 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:01,077 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:01,077 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:01,178 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:01,178 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:01,178 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:01,278 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:01,278 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:01,278 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such device
 08/06 20:43:01,378 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,378 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,378 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,478 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,478 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,478 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,579 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,579 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,579 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,679 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,679 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,679 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,779 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,779 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,779 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,879 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,879 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,879 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,979 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,979 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:01,979 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,079 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,079 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,079 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,180 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,180 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,180 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,280 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,280 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,280 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,380 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,380 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,380 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,480 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,480 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,480 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,580 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,580 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,580 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,681 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,681 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,681 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,781 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,781 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,781 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,881 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,881 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,881 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,981 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,981 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:02,981 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:03,081 ERROR [139905187436288] (librealsense-exception.h:52) map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:03,081 ERROR [139905187436288] (sensor.cpp:572) acquire_power failed: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
 08/06 20:43:03,081 ERROR [139905187436288] (global_timestamp_reader.cpp:239) Error during time_diff_keeper polling: map_device_descriptor Cannot open '/dev/video0 Last Error: No such file or directory
terminate called without an active exception

@rancheng
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rancheng commented Jun 8, 2022

The strange thing is that I can access the exposure and sensor data from python script with pyrealsense2 library without any problem.

def callback(frame):
    global color_frame_data, depth_frame_data, gyro_frame_data, accel_frame_data
    pr = frame.get_profile()
    if pr.stream_type() == rs.stream.gyro:
        # print("got gyro frame ...")
        pass
    if pr.stream_type() == rs.stream.accel:
        # print("got accel frame ...")
        pass
    if pr.stream_type() == rs.stream.color:
        print("got color frame ...")
    if frame.is_frameset():
        frameset = frame.as_frameset()
        f1 = frameset.get_color_frame().as_video_frame()
        f2 = frameset.get_depth_frame().as_video_frame()
        color_data = np.asanyarray(f1.get_data())
        print("color_data.shape: {}".format(color_data.shape))
        depth_data = np.asanyarray(f2.get_data())
        print("depth_data.shape: {}".format(depth_data.shape))
        actual_exposure = f1.get_frame_metadata(rs.frame_metadata_value.actual_exposure) * 1e-6
        print("actual_exposure: {}".format(actual_exposure))

The output is expected:

color_data.shape: (720, 1280)
depth_data.shape: (480, 640)
actual_exposure: 0.149205
color_data.shape: (720, 1280)
depth_data.shape: (480, 640)
actual_exposure: 0.149205
color_data.shape: (720, 1280)
depth_data.shape: (480, 640)
actual_exposure: 0.149205
color_data.shape: (720, 1280)
depth_data.shape: (480, 640)
actual_exposure: 0.149205
color_data.shape: (720, 1280)
depth_data.shape: (480, 640)
actual_exposure: 0.149205

@MartyG-RealSense
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MartyG-RealSense commented Jun 8, 2022 •
edited
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I am not equipped on my computer to run tests of RealSense users' project code.

Are you enabling depth, color and IMU streams simultaneously in your project, please? If you are then this can cause the color stream to stop receiving frames. If you are using all three stream types, a workaround in C++ is to use callbacks, as described at #9129 (comment) or to only use two stream types simultaneously instead of three if you need to use the IMU (as enabling the IMU streams is always the trigger for the problem).

@rancheng
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rancheng commented Jun 8, 2022

Hi @MartyG-RealSense , Thanks for your advice, I closed the depth and only enabled IMU and color sensors streams, it works!

Also I followed the advice from #issue50.

Removing the device.hardware_reset() line in my code seems to fix this bug.

I am going to close this issue as it is solved.

Thanks again @MartyG-RealSense !

@rancheng rancheng closed this as completed Jun 8, 2022
@MartyG-RealSense
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That's great news, @rancheng - you are very welcome. Thanks very much for the update!

@MartyG-RealSense MartyG-RealSense mentioned this issue Aug 24, 2023
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