[Ekiga-list] webcam "no space left on device" error

Seb spluque at gmail.com
Mon Dec 18 21:01:47 UTC 2006

Hi (apologies if this has been read in the debian amd64 ng, where this was
first posted, but without any followups),

Details on my webcam and where I have it attached are:

,-----[ lsusb ]
| Bus 002 Device 001: ID 0000:0000  
| Bus 001 Device 005: ID 0461:4d16 Primax Electronics, Ltd 
| Bus 001 Device 003: ID 045e:00db Microsoft Corp. 
| Bus 001 Device 004: ID 058f:9360 Alcor Micro Corp. 
| Bus 001 Device 006: ID 0c45:6029 Microdia Triplex i-mini PC Camera
| Bus 001 Device 002: ID 04e8:324c Samsung Electronics Co., Ltd ML-1740 Printer
| Bus 001 Device 001: ID 0000:0000  

Standard video conference software, e.g. kopete, ekiga, cannot communicate
with this webcam and show a "no device found" message (ekiga), but no
other useful error messages.  I was able to get something with the program
sn-webcam (http://sourceforge.net/project/showfiles.php?group_id=132181),
but all I got was a "no space left on device" message.  Googling for this,
it seemed it had to do with the bus device being saturated by the other
usb devices.  So I tried plugging the webcam to one of the ports in the
front panel of my desktop or the back, without success -- I think Bus 001
above is the back one, while Bus 002 is the front one.

If I unplug the webcam from the bus shown above, dmesg gives some lines
with errors:

,-----[ dmesg | tail ]
| ohci_hcd 0000:00:0b.0: leak ed ffff810074c5a370 (#81) state 2
| usb 1-8: usb_submit_urb() failed, error -28
| ohci_hcd 0000:00:0b.0: leak ed ffff810074c5a3c0 (#81) state 2
| usb 1-8: usb_submit_urb() failed, error -28
| ohci_hcd 0000:00:0b.0: leak ed ffff810074c5a410 (#81) state 2
| usb 1-8: usb_submit_urb() failed, error -28
| usb 1-8: USB disconnect, address 6
| ohci_hcd 0000:00:0b.0: leak ed ffff810074c5a460 (#81) state 2
| usb 1-8: Disconnecting SN9C10x PC Camera...
| usb 1-8: V4L2 device /dev/video0 deregistered

and reconnecting causes the system to freeze completely.  This camera uses
the sn9c102 driver and it does seem to be loaded:

,-----[ lsmod | grep 'sn9c' ]
| sn9c102                94732  0 
| videodev               29696  1 sn9c102
| v4l2_common            28672  2 sn9c102,videodev

Is anybody having similar problems?  Any pointers?  Thanks in advance.



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