Opencv camera.py doesn't show an image.

Electronics
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Opencv camera.py doesn’t show an image. Using latest Ubuntu image, updated libraries, compatible USB hub + webcam. Anyone had same problem?

26f2d6fcd54bc3f4b55903a893c0a1f2.jpeg
26f2d6fcd54bc3f4b55903a893c0a1f2.jpeg2368×3200 2.4 MB

52cb3ec96b5b0888ec39551b45ddcd18.jpeg
52cb3ec96b5b0888ec39551b45ddcd18.jpeg2368×3200 2.33 MB

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@Andrew_Wilkie the timeout kernel parameter on the uvcvideo LKM may be too low. Try the following:
∼$ sudo rmmod uvcvideo
∼$ sudo modprobe uvcvideo nodrop=1 timeout=5000
Other than that, I don’t know – it could be a power problem. I have not used that camera before.

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@Derek_Molloy thanks so much! Have now got a partial image. Draws ~20% of image from top down but then stops and rest of the window remains green. Window freezes and won’t close when I hit and I’m forced to kill it. Any thoughts on what to try next? Thanks again for your help.

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Found this post on RPi so will try appending ‘quirks=0x80’ as well as configuring camera by installing guvcview from apt-get …

~$ rmmod uvcvideo
~$ modprobe uvcvideo nodrop=1 timeout=5000 quirks=0x80

https://www.raspberrypi.org/forums/viewtopic.php?t=35689&p=300710