Segmentation Fault

billl2

I recently open the box for the OAKD camera, and am trying to run python3 depthai_demo.py. Can you advise on how I can fix the following situation?

No calibration file. Using Calibration Defaults.
Using depthai module from: /home/billl2/.local/lib/python3.8/site-packages/depthai.cpython-38-x86_64-linux-gnu.so
Depthai version installed: 1.0.0.0
Compiled mode found: compiled for 14 shaves, 14 cmx_slices and 1 NN_engines
XLink initialized.
Sending internal device firmware
Successfully connected to device.
Usb speed : High/480Mbps
Mx serial id : 14442C1061EABFD200
Loading config file
Attempting to open stream config_d2h
watchdog started
watchdog triggered
Stopping threads: ...
Stopping threads: DONE 0.000s.
Closing all observer streams: ...
Closing all observer streams: DONE.
Reseting device: 0.
Reseting: DONE.
XLink already initialized.
No USB device [03e7:2485], still looking... 0.000s E: [global] [ 723862] [python3] XLinkOpenStream:87 Cannot find stream id by the "config_d2h" name
E: [global] [ 723862] [python3] XLinkOpenStream:88 Max streamId reached!
Failed to open stream config_d2h ! Retrying ...
E: [global] [ 723912] [python3] XLinkOpenStream:52 Condition failed: getXLinkState(link) != XLINK_UP
Failed to open stream config_d2h ! Retrying ...
No USB device [03e7:2485], still looking... 0.100s E: [global] [ 723962] [python3] XLinkOpenStream:52 Condition failed: getXLinkState(link) != XLINK_UP
Failed to open stream config_d2h ! Retrying ...
E: [global] [ 724012] [python3] XLinkOpenStream:52 Condition failed: getXLinkState(link) != XLINK_UP
Failed to open stream config_d2h ! Retrying ...
No USB device [03e7:2485], still looking... 0.201s E: [global] [ 724063] [python3] XLinkOpenStream:52 Condition failed: getXLinkState(link) != XLINK_UP
Failed to open stream config_d2h ! Retrying ...
Stream not opened: config_d2h
['metaout', 'previewout']
Available streams: []
device is not initialized
Pipeline is not created.
No USB device [03e7:2485], still looking... 0.401s [FOUND]
Sending internal device firmware
Successfully connected to device.
Segmentation fault (core dumped)

Brandon

Hi @billl2,

Sorry about the trouble here. So I see that the device is connecting at USB2 rates (Usb speed : High/480Mbps). So do you know if your host supports USB3, or if this is a USB2 port? And which host is it?

So I'd recommend trying:

python3 depthai_demo.py -fusb2 to see if this clears it up.

I'd also recommend restarting the host in case something is out of sorts with USB when interacting with DepthAI.

One other note:

You could try running Gen2 instead, say with a code sample from here:
https://docs.luxonis.com/projects/api/en/latest/samples/01_rgb_preview/

So our Gen2 API is now our default, but some documentation point to this DepthAI 1.x (or <1.x) instead of Gen2 (which is 2.x).

Thoughts?

Thanks and sorry again about the trouble,
-Brandon

billl2

Hey thanks Brandon!

Adding the -fusb2 worked like a charm!

On a side note, I am curious to know if you know whether we can use the demo to record a video? or what the best way to do that is?

dhruvsheth-ai

Here's an example to store the left, right, RGB and disparity frames. So you could use this example - https://github.com/luxonis/depthai-experiments/tree/master/gen2-collecting-training-data