The VideoLAN Forums

Hello,
We use VMware player for a lot of development purposes. VMware player is running in Windows XP.
I have connected a uvc logitech camera to my laptop. (tested with two different models)
What I encountered is the following: (all OS'es running in VMware)
Ubuntu 10.04 & VLC & xawtv installed from the repository (latest version):
- Both VLC & xawtv show the camera image.
Ubuntu 10.10 & VLC & xawtv installed from the repository (latest version):
- Only xawtv shows the camera image.

VLC shows:
qt4 warning: Input option: input-slave=alsa://
qt4 warning: Input option: v4l2-standard=0
qt4 warning: Input option: file-caching=300
main debug: adding item `v4l2://' ( v4l2:// )
qt4 debug: Adding a new MRL to recent ones: v4l2://
main debug: rebuilding array of current - root Playlist
main debug: rebuild done - 3 items, index 1
main debug: processing request item v4l2:// node Playlist skip 0
main debug: resyncing on v4l2://
main debug: v4l2:// is at 2
main debug: starting new item
main debug: creating new input thread
main debug: Creating an input for 'v4l2://'
main debug: thread (input) created at priority 10 (input/input.c:214)
main debug: TIMER input launching for 'v4l2://' : 37248.358 ms - Total 37248.358 ms / 1 intvls (Avg 37248.356 ms)
main debug: thread started
main debug: using timeshift granularity of 50 MiB
main debug: using timeshift path '/tmp'
main debug: `v4l2://' gives access `v4l2' demux `' path `'
main debug: creating demux: access='v4l2' demux='' path=''
main debug: looking for access_demux module: 1 candidate
v4l2 debug: Trying direct kernel v4l2
v4l2 debug: opening device '/dev/video0'
v4l2 debug: V4L2 device: UVC Camera (046d:081d) using driver: uvcvideo (version: 0.1.0) on usb-0000:02:03.0-1
v4l2 debug: the device has the capabilities: (X) Video Capture, ( ) Audio, ( ) Tuner, ( ) Radio
v4l2 debug: supported I/O methods are: ( ) Read/Write, (X) Streaming, ( ) Asynchronous
v4l2 debug: video input 0 (Camera 1) has type: External analog input *
v4l2 debug: device supports chroma YUY2 [YUV 4:2:2 (YUYV), YUYV]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports size 960x720
v4l2 debug: device supports size 1280x720
v4l2 debug: device supports size 1392x768
v4l2 debug: device supports size 1504x832
v4l2 debug: device supports size 1600x896
v4l2 debug: device supports size 1280x960
v4l2 debug: device supports size 1280x1024
v4l2 debug: device supports size 1600x1200
v4l2 debug: device supports chroma MJPG [MJPEG, MJPG]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports size 960x720
v4l2 debug: device supports size 1280x720
v4l2 debug: device supports size 1392x768
v4l2 debug: device supports size 1504x832
v4l2 debug: device supports size 1600x896
v4l2 debug: device supports size 1280x960
v4l2 debug: device supports size 1280x1024
v4l2 debug: device supports size 1600x1200
v4l2 debug: '/dev/video0' is a video device
v4l2 error: cannot set input (Device or resource busy)
v4l2 debug: Trying libv4l2 wrapper
v4l2 debug: opening device '/dev/video0'
v4l2 debug: V4L2 device: UVC Camera (046d:081d) using driver: uvcvideo (version: 0.1.0) on usb-0000:02:03.0-1
v4l2 debug: the device has the capabilities: (X) Video Capture, ( ) Audio, ( ) Tuner, ( ) Radio
v4l2 debug: supported I/O methods are: (X) Read/Write, (X) Streaming, ( ) Asynchronous
v4l2 debug: video input 0 (Camera 1) has type: External analog input *
v4l2 debug: device supports chroma YUY2 [YUV 4:2:2 (YUYV), YUYV]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports size 960x720
v4l2 debug: device supports size 1280x720
v4l2 debug: device supports size 1392x768
v4l2 debug: device supports size 1504x832
v4l2 debug: device supports size 1600x896
v4l2 debug: device supports size 1280x960
v4l2 debug: device supports size 1280x1024
v4l2 debug: device supports size 1600x1200
v4l2 debug: device supports chroma MJPG [MJPEG, MJPG]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports size 960x720
v4l2 debug: device supports size 1280x720
v4l2 debug: device supports size 1392x768
v4l2 debug: device supports size 1504x832
v4l2 debug: device supports size 1600x896
v4l2 debug: device supports size 1280x960
v4l2 debug: device supports size 1280x1024
v4l2 debug: device supports size 1600x1200
v4l2 debug: device supports chroma RV24 [RGB3, RGB3]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports chroma RV24 [BGR3, BGR3]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports chroma I420 [YU12, YU12]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports chroma YV12 [YV12, YV12]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: '/dev/video0' is a video device
v4l2 error: cannot set input (Device or resource busy)
main debug: no access_demux module matching "v4l2" could be loaded
main debug: TIMER module_need() : 5.016 ms - Total 5.016 ms / 1 intvls (Avg 5.016 ms)
main debug: creating access 'v4l2' path=''
main debug: looking for access module: 1 candidate
v4l2 debug: Trying direct kernel v4l2
v4l2 debug: opening device '/dev/video0'
v4l2 debug: V4L2 device: UVC Camera (046d:081d) using driver: uvcvideo (version: 0.1.0) on usb-0000:02:03.0-1
v4l2 debug: the device has the capabilities: (X) Video Capture, ( ) Audio, ( ) Tuner, ( ) Radio
v4l2 debug: supported I/O methods are: ( ) Read/Write, (X) Streaming, ( ) Asynchronous
v4l2 debug: video input 0 (Camera 1) has type: External analog input *
v4l2 debug: device supports chroma YUY2 [YUV 4:2:2 (YUYV), YUYV]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports size 960x720
v4l2 debug: device supports size 1280x720
v4l2 debug: device supports size 1392x768
v4l2 debug: device supports size 1504x832
v4l2 debug: device supports size 1600x896
v4l2 debug: device supports size 1280x960
v4l2 debug: device supports size 1280x1024
v4l2 debug: device supports size 1600x1200
v4l2 debug: device supports chroma MJPG [MJPEG, MJPG]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports size 960x720
v4l2 debug: device supports size 1280x720
v4l2 debug: device supports size 1392x768
v4l2 debug: device supports size 1504x832
v4l2 debug: device supports size 1600x896
v4l2 debug: device supports size 1280x960
v4l2 debug: device supports size 1280x1024
v4l2 debug: device supports size 1600x1200
v4l2 debug: '/dev/video0' is a video device
v4l2 error: cannot set input (Device or resource busy)
v4l2 debug: Trying libv4l2 wrapper
v4l2 debug: opening device '/dev/video0'
v4l2 debug: V4L2 device: UVC Camera (046d:081d) using driver: uvcvideo (version: 0.1.0) on usb-0000:02:03.0-1
v4l2 debug: the device has the capabilities: (X) Video Capture, ( ) Audio, ( ) Tuner, ( ) Radio
v4l2 debug: supported I/O methods are: (X) Read/Write, (X) Streaming, ( ) Asynchronous
v4l2 debug: video input 0 (Camera 1) has type: External analog input *
v4l2 debug: device supports chroma YUY2 [YUV 4:2:2 (YUYV), YUYV]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports size 960x720
v4l2 debug: device supports size 1280x720
v4l2 debug: device supports size 1392x768
v4l2 debug: device supports size 1504x832
v4l2 debug: device supports size 1600x896
v4l2 debug: device supports size 1280x960
v4l2 debug: device supports size 1280x1024
v4l2 debug: device supports size 1600x1200
v4l2 debug: device supports chroma MJPG [MJPEG, MJPG]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports size 960x720
v4l2 debug: device supports size 1280x720
v4l2 debug: device supports size 1392x768
v4l2 debug: device supports size 1504x832
v4l2 debug: device supports size 1600x896
v4l2 debug: device supports size 1280x960
v4l2 debug: device supports size 1280x1024
v4l2 debug: device supports size 1600x1200
v4l2 debug: device supports chroma RV24 [RGB3, RGB3]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports chroma RV24 [BGR3, BGR3]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports chroma I420 [YU12, YU12]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: device supports chroma YV12 [YV12, YV12]
v4l2 debug: device supports size 640x480
v4l2 debug: device supports size 160x120
v4l2 debug: device supports size 176x144
v4l2 debug: device supports size 320x176
v4l2 debug: device supports size 320x240
v4l2 debug: device supports size 432x240
v4l2 debug: device supports size 352x288
v4l2 debug: device supports size 544x288
v4l2 debug: device supports size 640x360
v4l2 debug: device supports size 752x416
v4l2 debug: device supports size 800x448
v4l2 debug: device supports size 864x480
v4l2 debug: device supports size 960x544
v4l2 debug: device supports size 1024x576
v4l2 debug: device supports size 800x600
v4l2 debug: device supports size 1184x656
v4l2 debug: '/dev/video0' is a video device
main debug: no fetch required for (null) (art currently (null))
v4l2 error: cannot set input (Device or resource busy)
main debug: no access module matching "v4l2" could be loaded
main debug: TIMER module_need() : 4.081 ms - Total 4.081 ms / 1 intvls (Avg 4.081 ms)
main error: open of `v4l2://' failed: (null)
main debug: finished input
main debug: dead input
main debug: thread ended
main debug: changing item without a request (current 2/3)
main debug: nothing to play

What is the reason of this problem and how can it be solved?

Thanks,
Johan

kernel says the device is busy. Another application is using it.

Dear Remy,

This would be too easy - I can assure you this is not the case.
I already discusssed this issue with Jean-Paul Saman (I guess you know him); he is working for us and he advised me to post this topic.

We are rather convinced here is a bug somewhere.

Best regards,
Johan

It is unlikely that VLC invents EBUSY... But if you think it does, you're welcome to propose a fix.

If I would have the knowledge to debug this further, I would do it. But I don't have it...