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I have a Microsoft LifeCam VX-700 webcam, and it was working okay until yesterday when it started blinking for no reason.

I haven't changed any settings, or even used it recently.

And now it comes and goes, without me doing anything.

Could this be caused by a software update that was released recently?

I'm running Ubuntu 12.04 LTS.

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Can you test it on another PC? – konrad Jun 28 '12 at 9:00
I don't have access to another PC, but it doesn't do that on Windows 7, so it's not a hardware thing. – Mahmoud Hossam Jun 28 '12 at 9:18
Enter this command in a Terminal: tail -f /var/log/syslog then plug in your webcam. To you get any output? See also this… – konrad Jun 28 '12 at 11:16

If it starts blinking when you access flash in Google Chrome, it might be caused by a bug in their Pepper-based Flashplayer. To fix it, go to about:plugins in Chrome, click +Details to expand all items, then disable the plugin /opt/google/chrome/PepperFlash/ Leave the regular plugin enabled, or install it if you need to. Should stop the blinking.

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Your solution fixes the webcam problem, but then it deteriorates flash in chrome. Before your solution I was able to watch full screen videos on youtube in a relatively fluent way, after the fix it was back to the old chopped ways I knew before I used Chrome (the fact that only Chrome continues flash development on Linux was the reason I moved from chromium to Chrome in the first place, so if the webcam fix breaks flash, unfortunately that doesn't solve it for me). I filed a bug report today:… – user87950 Sep 6 '12 at 16:04

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