To see camera information
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$: uname -sr && lsusb
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Linux 2.6.28-15-generic
Bus 001 Device 008: ID 046d:08c1 Logitech, Inc. QuickCam Fusion
Bus 001 Device 007: ID 046d:08c1 Logitech, Inc. QuickCam Fusion
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
To initialize camera
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sudo rmmod uvcvideo
sudo modprobe uvcvideo
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