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I've installed ubuntu last version and have problem with webcam, it's invisible for computer, all usb ports are active, but webcam seems to be dead. Tried 2 creative cams, no one of these were working. Getting message "webcams not detected"...any ideas?

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Welcome to Ask Ubuntu! We need more hardware information to help you, can you look at this question and then edit your question adding the information? – Jorge Castro Dec 17 '11 at 20:52
post output of lsusb command (perhaps on pastebin or something) – ThatGuy Dec 31 '11 at 5:59

Have you tried installing cheese software_center_icon? Cheese is a software that allows you to take photos and videos with your webcam, with fun graphical effects.

Run the following to install the package via a terminal (Default keyboard shortcut: CtrlAltT)

sudo apt-get update && sudo apt-get install cheese

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This answer could be a lot more helpful if you mentioned what cheese was and how it might help :) – Caesium Dec 18 '11 at 11:21
instead of downvoting and commenting on other answers,u can help OTHERS. – sum2000 Dec 18 '11 at 12:01
sum, if you look on the review page and search for low quality posts, your name shows up a lot. Now, that tool isn't perfect, but short, error-filled posts aren't all that helpful. Instead of complaining, please try to write high-quality answers that will be more helpful. – Scott Severance Dec 18 '11 at 13:10
again, instead of caring for my low quality post ,try to answer the person in need,don't waste your time. – sum2000 Dec 18 '11 at 14:23
I wasn't the one who downvoted you (I never do so anonymously). But let me explain how this site works: Voting (including downvoting) is one of the central features on this site. Other features include commenting and editing. The goal is to do what it takes to have high-quality answers, and simply adding another answer isn't always the best way to accomplish that. I'm trying to be helpful here; otherwise I'd just downvote and ignore you. I suggest that you read the FAQ: – Scott Severance Dec 18 '11 at 15:04

if you haven't tried this yet... make sure you put your USB web cam into a POWERED USB port not just some dumb usb hub device. It may not have enough power to work??

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I think you are experiencing this bug.

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