Cheese: "No camera found!"
On 11/17/2009 12:29 AM, Detlef Lechner wrote:
> lsusb recognizes my Web cam Logitec Quickcam E2500 (http://nopaste.debianforum.de/31734). Some days ago this web cam produced pictures and videos on Cheese and Linphone on this Karmic computer but last night Cheese reports: "No camera found!"
> At that time /var/log/messages outputs:
> '~$ lsmod' signifies that the modules v4l1_compat, vesafb, video and videodev are loaded.
> /dev/video0 with (81,0) exists.
> '~$ xawtv /dev/video0' produces (except for start messages) the repeating message: "libv4lconvert: Error compressing JPEG: unknown huffman code:
> 0000ffff." The Huffman values sometimes (but rarely) differ from 000ffff.
> I unplugged the USB camera plug and plugged it in the second USB receptacle. This made no difference.
> How to troubleshoot?
I don't have a great answer. But I had a similar problem, when the
camera would hang, /dev/video0 would exist, but camera not found. When
re-plugging the camera, I would then have both /dev/video0 and
/dev/video1 The latter would work.
I never had time to finish tracking the problem, but I mention it in
case you have the same situation. The extra info might give someone
other ideas. If you have come across solutions, i am interest in hearing.
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