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internal webcam error: libv4l2: error turning on stream: Input/output error

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linux-howto

http://unix.stackexchange.com – Simple problem, not so simple solution as it seems to me. Whenever I try to start viewing my webcam, I get the following error: libv4l2: error turning on stream: Input/output error be it cheese, camorama or vlc. Except in some special cases which I can not reproduce, where it will just work. I've tried to compile it as a kernel module or right into the kernel. In both cases, it randomly works sometimes but not reliably. VLC actually shares some more what's going wrong. [0x97a63f8] v4l2 demux error: VIDIOC_STREAMON failed libv4l2: error setting pixformat: Device or resource busy (repeats 1 (HowTos)