webcam works on one of two Lucid systems

[NoOp]

On 07/21/2010 02:11 PM, Adam Funk wrote:
...
> guvcview 1.1.3
> video device: /dev/video0 
> /dev/video0 - device 1
> Init. UVC Camera (046d:0804) (location: usb-0000:00:1d.7-1)
> { pixelformat = 'YUYV', description = 'YUV 4:2:2 (YUYV)' }
> { discrete: width = 640, height = 480 }
> 	Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5, 
> { discrete: width = 160, height = 120 }
> 	Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5, 
[snips]
> checking format: 1448695129
> vid:046d 
> pid:0804 
> driver:uvcvideo
[snips]
> write /home/adam/.guvcviewrc OK
> free controls
> cleaned allocations - 100%
> Closing portaudio ...OK
> #v-

Those all look ok. It's finding the correct device etc.

> 
> *But* the Capture.avi file plays fine in mplayer!

Interesting. So it's recording the video fine, but not feeding back to
the application.

> 
>> $ ls /dev/video*
> 
> $ ls -l /dev/v4l/* /dev/video0 
> crw-rw----+ 1 root video 81, 0 2010-07-21 22:04 /dev/video0
> 
> /dev/v4l/by-id:
> total 0
> lrwxrwxrwx 1 root root 12 2010-07-21 22:04 usb-046d_0804_1483FE50-video-index0 -> ../../video0
> 
> /dev/v4l/by-path:
> total 0
> lrwxrwxrwx 1 root root 12 2010-07-21 22:04 pci-0000:00:1d.7-usb-0:1:1.0-video-index0 -> ../../video0
> 
Those look right.
> 
> I think the problem is not the webcam input but the inability of some
> programs (cheese, skype, guvcview) to display it on my system.

But if it shows in mplayer then it must be a configuration setting
somewhere. Are you using gnome-player to display or the cli? Does it
display in gnome-player using File|TV|Open Analog TV?