[BUG] Device fails to re-appear after boot (X_LINK_DEVICE_NOT_FOUND) #1514
Description
Describe the bug
I created a very simple CMake project and copied the exact code from
depthai-core/examples/cpp/Camera/camera_output.cpp. The project builds successfully.
But when I run the binary I get:
terminate called after throwing an instance of 'std::runtime_error'
what(): Failed to find device after booting, error message: X_LINK_DEVICE_NOT_FOUND
Aborted (core dumped)
Minimal Reproducible Example
The code is literally identical to: depthai-core/examples/cpp/Camera/camera_output.cpp
My CMakeLists.txt:
cmake_minimum_required(VERSION 3.22)
project(DEPTHAPP)
find_package(Threads)
find_package(OpenCV REQUIRED)
include(FetchContent)
FetchContent_Declare(
fp16
GIT_REPOSITORY https://github.com/Maratyszcza/FP16.git
GIT_TAG master
)
FetchContent_MakeAvailable(fp16)
# Create utility library
add_library(utility /home/devcontainer/depthai-core/examples/cpp/utility/utility.cpp)
target_compile_features(utility PUBLIC cxx_std_17)
target_include_directories(utility PUBLIC "/home/devcontainer/depthai-core/examples/cpp/utility" "/work/depthapp/build/_deps/fp16-src/include")
target_link_libraries(utility ${OpenCV_LIBS})
set(TARGET depth_camera)
add_executable(${TARGET})
list(APPEND CMAKE_PREFIX_PATH "/home/devcontainer/depthai-install")
find_package(depthai CONFIG REQUIRED)
add_definitions(-DUSE_OPENCV)
message(STATUS "OpenCV included")
target_sources(${TARGET} PRIVATE "/work/depthapp/main.cpp")
set(target ${TARGET})
target_include_directories(${TARGET} PRIVATE ${OpenCV_INCLUDE_DIRS})
message(STATUS "OpenCV_INCLUDE_DIRS ${OpenCV_INCLUDE_DIRS}")
target_link_libraries(${TARGET} PRIVATE
depthai::core
${OpenCV_LIBS}
Threads::Threads
utility)
set(test_env
# Misc
"UBSAN_OPTIONS=halt_on_error=1"
"RUNNING_AS_TEST=1"
# DepthAI
"DEPTHAI_SEARCH_TIMEOUT=20000"
"DEPTHAI_CONNECT_TIMEOUT=10000"
"DEPTHAI_RECONNECT_TIMEOUT=0"
)
Expected behavior
The executable should run and stream the camera frames like the official example. When I run the example directly from the cloned repository, it works. So as soon as I try to integrate the example into one of my own projects, it stops working.
Attach system log
System log:
{
"architecture": "64bit",
"machine": "x86_64",
"platform": "Linux-6.6.87.2-microsoft-standard-WSL2-x86_64-with-glibc2.35",
"processor": "x86_64",
"python_build": "main Aug 15 2025 14:32:43",
"python_compiler": "GCC 11.4.0",
"python_implementation": "CPython",
"python_version": "3.10.12",
"release": "6.6.87.2-microsoft-standard-WSL2",
"system": "Linux",
"version": "#1 SMP PREEMPT_DYNAMIC Thu Jun 5 18:30:46 UTC 2025",
"win32_ver": "",
"packages": [
"bottle==0.12.25",
"certifi==2025.8.3",
"charset-normalizer==3.4.3",
"conan==1.59.0",
"distro==1.8.0",
"fasteners==0.20",
"idna==3.10",
"Jinja2==3.1.6",
"lxml==6.0.1",
"MarkupSafe==3.0.2",
"node-semver==0.6.1",
"patch-ng==1.17.4",
"pluginbase==1.0.1",
"Pygments==2.19.2",
"PyJWT==2.10.1",
"python-dateutil==2.9.0.post0",
"PyYAML==6.0",
"requests==2.32.5",
"six==1.16.0",
"tqdm==4.67.1",
"unittest-xml-reporting==3.2.0",
"urllib3==1.26.20"
],
"usb": [
"NoLib"
],
"uname": [
"Linux 59b6b55a7d80 6.6.87.2-microsoft-standard-WSL2 #1 SMP PREEMPT_DYNAMIC Thu Jun 5 18:30:46 UTC 2025 x86_64 x86_64"
]
}
Additional context
App logs (DEPTHAI_LEVEL="trace" and XLINK_LEVEL="debug"):
[2025-11-05 11:50:46.165] [depthai] [info] Environment variable DEPTHAI_DEBUG is not set. Using default value: ''
[2025-11-05 11:50:46.166] [depthai] [info] Environment variable DEPTHAI_SEARCH_TIMEOUT is not set. Using default value: ''
[2025-11-05 11:50:46.166] [depthai] [info] Environment variable DEPTHAI_INSTALL_SIGNAL_HANDLER is not set. Using default value: ''
[2025-11-05 11:50:46.166] [depthai] [info] Environment variable DEPTHAI_LIBUSB_ANDROID_JAVAVM is not set. Using default value: ''
[2025-11-05 11:50:46.166] [depthai] [debug] Library information - version: 3.1.0, commit: 89fd1e837fe1c64e8250036ccc6ec7fcd706ad6e from 2025-10-15 10:15:47 +0200, build: 2025-10-21 11:08:00 +0000, libusb enabled: true
[2025-11-05 11:50:46.177] [depthai] [info] Environment variable DEPTHAI_PROFILING is not set. Using default value: ''
[2025-11-05 11:50:46.180] [depthai] [debug] Initialize - finished
[2025-11-05 11:50:46.180] [depthai] [info] Environment variable DEPTHAI_PROTOCOL is not set. Using default value: ''
�[37mD: [global] [ 446180] [depth_camera] getLibusbDeviceMxId:422 Sending MXID read to 1.1, try 1
�[0m
�[37mD: [global] [ 446185] [depth_camera] getLibusbDeviceMxId:521 Cached MX ID 14442C10A123DAD600 at index 0�[0m
�[37mD: [global] [ 446185] [depth_camera] getUSBDevices:179 getLibusbDeviceMxId returned: Success�[0m
[2025-11-05 11:50:46.233] [depthai] [info] Environment variable DEPTHAI_DEVICE_MXID_LIST is not set. Using default value: ''
[2025-11-05 11:50:46.233] [depthai] [info] Environment variable DEPTHAI_DEVICE_ID_LIST is not set. Using default value: ''
[2025-11-05 11:50:46.233] [depthai] [info] Environment variable DEPTHAI_DEVICE_NAME_LIST is not set. Using default value: ''
[2025-11-05 11:50:46.233] [depthai] [info] Adding device to the filtered list: DeviceInfo(name=1.1, deviceId=14442C10A123DAD600, X_LINK_UNBOOTED, X_LINK_USB_VSC, X_LINK_MYRIAD_X, X_LINK_SUCCESS)
[2025-11-05 11:50:46.234] [host] [debug] Device - OpenVINO version: universal
[2025-11-05 11:50:46.234] [depthai] [info] Environment variable DEPTHAI_WATCHDOG is not set. Using default value: ''
[2025-11-05 11:50:46.234] [depthai] [info] Environment variable DEPTHAI_WATCHDOG_INITIAL_DELAY is not set. Using default value: ''
[14442C10A123DAD600] [1.1] [1762343446.236] [host] [debug] Device - BoardConfig: {"camera":[],"defaultImuExtr":{},"emmc":null,"gpio":[],"imu":null,"logDevicePrints":null,"logPath":null,"logSizeMax":null,"logVerbosity":null,"network":{"mtu":0,"xlinkTcpNoDelay":true},"nonExclusiveMode":false,"pcieInternalClock":null,"sysctl":[],"uart":[],"usb":{"flashBootedPid":63037,"flashBootedVid":999,"manufacturer":"","maxSpeed":4,"pid":63035,"productName":"","vid":999},"usb3PhyInternalClock":null,"uvc":null,"watchdogInitialDelayMs":null,"watchdogTimeoutMs":null}
libnop:
0000: b9 13 b9 07 81 e7 03 81 3b f6 81 e7 03 81 3d f6 04 bd 00 bd 00 b9 02 00 01 ba 00 be be bb 00 bb
0020: 00 be be be be be be be 00 bb 00 be be bb 00
[2025-11-05 11:50:46.277] [depthai] [debug] Resources - Archive 'depthai-bootloader-fwp-0.0.28.tar.xz' open: 5ms, archive read: 102ms
[2025-11-05 11:50:46.840] [depthai] [debug] Resources - Archive 'depthai-device-fwp-0ada9b9800478cf2c7056cea5c2bab2c8f6a2cbd.tar.xz' open: 5ms, archive read: 665ms
[2025-11-05 11:50:46.841] [depthai] [info] Environment variable DEPTHAI_DEVICE_BINARY is not set. Using default value: ''
[2025-11-05 11:50:46.899] [depthai] [info] Environment variable DEPTHAI_CONNECT_TIMEOUT is not set. Using default value: ''
[2025-11-05 11:50:46.899] [depthai] [info] Environment variable DEPTHAI_BOOTUP_TIMEOUT is not set. Using default value: ''
�[37mD: [global] [ 446900] [depth_camera] getLibusbDeviceMxId:422 Sending MXID read to 1.1, try 1
�[0m
�[37mD: [global] [ 446902] [depth_camera] getLibusbDeviceMxId:521 Cached MX ID 14442C10A123DAD600 at index 0�[0m
�[37mD: [global] [ 446902] [depth_camera] getUSBDevices:179 getLibusbDeviceMxId returned: Success�[0m
�[37mD: [global] [ 446903] [depth_camera] usb_open_device:609 Found EP 0x81 : max packet size is 512 bytes�[0m
�[37mD: [global] [ 446903] [depth_camera] usb_open_device:609 Found EP 0x01 : max packet size is 512 bytes�[0m
�[37mD: [global] [ 446903] [depth_camera] send_file:644 Performing bulk write of 40 bytes...�[0m
�[37mD: [global] [ 446903] [depth_camera] send_file:672 Successfully sent 40 bytes of data in 0.062263 ms (0.000613 MB/s)�[0m
�[37mD: [global] [ 446904] [depth_camera] send_file:644 Performing bulk write of 28757443 bytes...�[0m
�[37mD: [global] [ 449095] [depth_camera] send_file:672 Successfully sent 28757443 bytes of data in 12.520437 ms (2.190438 MB/s)�[0m
�[37mD: [global] [ 449095] [depth_camera] usbPlatformBootFirmware:989 Boot successful, device address 1.1�[0m
[2025-11-05 11:50:49.095] [depthai] [debug] Searching for booted device: DeviceInfo(name=1.1, deviceId=14442C10A123DAD600, X_LINK_BOOTED, X_LINK_USB_VSC, X_LINK_MYRIAD_X, X_LINK_SUCCESS), name used as hint only