webcam works on one of two Lucid systems

Adam Funk a24061 at
Sun Jul 18 19:51:23 UTC 2010

On 2010-07-17, Marlon wrote:

> for debug i´ve used mplayer to test my webcams
> for me, your problem seems to be driver..
> apt get some libs (video4linux,v4l-conf, xawtv, xawtv-plugins, v4l or v4l2
> )
> IF (v4l2)
> mplayer tv:// -tv driver=v4l2:width=352:height=288:device=/dev/video0
> my search (

This is really weird.  The webcam works equally well on both machines
for that mplayer command (also without specifying width and height).

It still doesn't work in cheese & skype on the second one, though!

On both machines, mplayer's output includes this near the beginning.

TV file format detected.
Selected driver: v4l2
 name: Video 4 Linux 2 input
 author: Martin Olschewski <olschewski at>
 comment: first try, more to come ;-)
v4l2: your device driver does not support VIDIOC_G_STD ioctl, VIDIOC_G_PARM was used instead.
Selected device: UVC Camera (046d:0804)

I'll keep looking, but I'd appreciate any further suggestions.
(Unfortunately I can't read the Portuguese thread.)


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