Hey!
I have an OAK4 device (with batch time T2517). I've updated the Luxonis OS to v1.20.5 today. After the update, the device keeps disconnecting within a few minutes of running a pipeline. This is happening even when I run the simple "Camera Output" pipeline on the Examples page. It throws the same error (shown below) every time. The LED stays green even after the execution is stopped. I have to run a power cycle to be able to use the device again. Later today, I updated the OS to v1.21.1, but the issue still persists.
Should I downgrade the OS? Please help me resolve this issue.
Regards,
Rohan
[1718999684] [10.10.0.166] [1764814620.040] [host] [warning] Monitor thread (device: 1718999684 [10.10.0.166]) - ping was missed, closing the device connection
F: [global] [ 622041] [Scheduler00Thr] tcpipPlatformWrite:943 Cannot find file descriptor by key: 55
[2025-12-03 20:17:02.049] [depthai] [error] Communication exception - possible device error/misconfiguration. Original message 'Couldn't read data from stream: '__x_0_0' (X_LINK_ERROR)'
[2025-12-03 20:17:42.002] [warning] DeviceGate getState not successful - got no response
[2025-12-03 20:17:42.002] [error] DeviceGate session state is in error state - exiting
[1718999684] [10.10.0.166] [1764814662.002] [host] [warning] Closed connection
[1718999684] [10.10.0.166] [1764814662.002] [host] [warning] Attempting to reconnect. Timeout is 10000ms
[1718999684] [10.10.0.166] [1764814672.923] [host] [warning] Reconnection unsuccessful, trying again. Attempts left: 0
[1718999684] [10.10.0.166] [1764814672.923] [host] [warning] Reconnection unsuccessful, closing the device
[2025-12-03 20:17:52.923] [ThreadedNode] [error] Node threw exception, stopping the node. Exception message: Communication exception - possible device error/misconfiguration. Original message 'Couldn't read data from stream: '__x_0_0' (X_LINK_ERROR)'
[2025-12-03 20:17:56.978] [warning] DeviceGate getState not successful - got no response
[2025-12-03 20:17:56.978] [error] DeviceGate session state is in error state - exiting
Traceback (most recent call last):
File "/home/rohan/Desktop/noodles/depthaiv3-testing/camera_test.py", line 17, in <module>
videoIn = videoQueue.get()
MessageQueue.QueueException: MessageQueue was closed
