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fix webcam problem by changing its file in /dev/

At Ubuntu-Gnome 13.10, My webcam can be accessed by cheese; Also Skype determined the webcam, But it does not show any output for webcam at options window (Webcam also doesn't turn on). Skype ...
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Linux: Interface/control 3.5 mm Headphone or Microphone port? [closed]

This might sound crazy, but bear with me ;) I am making a DIY camera trigger, and I would like to see if I can trigger it remotely by plugging it into my Microphone or Headphone ports. It's a basic ...