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My Microsoft Lifecam VX-800 stopped working without any plausible reason. lsusb identifies the camera with the name "Z-Star Microelectronics Corp. Venus USB2.0 Camera". Another unusual thing is that the camera's green light is always turned on (this didn't happen when it was still working).

I didn't install any new software, update anything, or change any OS configurations. What could have broken things?

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