Cameras blocked and stuck on .get function after couple of hours.

DavidShaer

Hi,

I have three cameras connected to the Jetson AGX ORIN (two oak-1 lite cameras and one oak-d pro camera).

Each camera has there own thread and the frames should be receiving constantly,

For the first couple of hours I'm getting frames as expected but then it goes into a stuck state on the .get function

Sometimes only one module goes into this state, other times it is all three cameras that go into this state.

Experiments I had:

I tried also use .tryGet() and in the first frame calling I got a valid frame but the next frames calling I got None frames

I added environment variables, such as:

os.environ['PYDEVD_THREAD_DUMP_ON_WARN_EVALUATION_TIMEOUT'] = 'true'

os.environ['PYDEVD_WARN_EVALUATION_TIMEOUT'] = '10000'

os.environ['PYDEVD_INTERRUPT_THREAD_TIMEOUT'] = '10000'

os.environ['PYDEVD_UNBLOCK_THREADS_TIMEOUT'] = '10000'

And run with regular .get, but still got the same results as mention above.

In addition I got the following message:

Notes:

all three cameras connected via Y-adapter and Power supply, SUPER speed.
relevant part of the code:
def get_frames(self):
pkt = self.output_queue.get()
frame = pkt.getCvFrame()
return frame

Any help will be appreciated

Thanks
David

jakaskerl

Hi DavidShaer
This is a known issue on the Jetsons, where for some reason the USB devices are cutoff due to some (I assume) power management. I say this because I tested the same thing on our POE devices and had no issues. We are still working on the core issue.

I'll notify you once the issue is fixed/we have a workaround.

Thanks,
Jaka

DavidShaer

Great thanks 🙂