Unfortunately

Linux flotta 3.2.0-27-generic #43 SMP Sat Jul 7 15:15:28 CST 2012 x86_64
x86_64 x86_64 GNU/Linux

didn't fix my bug. I still get libv4l2: error turning on stream: No
space left on device

I haven't looked at the linux drivers. I have found a problem in another
OS which may be similar in which a uvcvideo driver asks for a contiguous
chunk of memory with which to transfer the frame. As kernel memory gets
fragmented this becomes difficult until an EIO. The solution being
investigated there (seems to work) is to teach ehci's usb_mem allocator
about multiple extents (no longer need contiguous)... On the other hand
it doesn't quite feel the same, as there the first few frames are always
captured, but here I have never succeeded in capturing a single frame.

Thanks!

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https://bugs.launchpad.net/bugs/1014749

Title:
  can't read uvcvideo (usb video / webcams) devices

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