problème avec webcam Logictech QuickCam 10A

 lsusb
Bus 002 Device 008: ID 046d:08d7 Logitech, Inc. 
Bus 002 Device 004: ID 0204:6025  
Bus 002 Device 003: ID 045e:0040 Microsoft Corp. Wheel Mouse Optical
Bus 002 Device 001: ID 0000:0000  
Bus 001 Device 007: ID 058f:6362 Alcor Micro Corp. 
Bus 001 Device 004: ID 13fe:1a00  
Bus 001 Device 001: ID 0000:0000

Launching xawtv (press q on xawtv window to quit it)...
If the image is not sharp, try focusing it by turning the
wheel around the camera lens.
        xawtv -noscale

 -noxv -c ""
This is xawtv-3.95.dfsg.1, running on Linux/x86_64 (2.6.20-15-generic)
X Error of failed request:  XF86DGANoDirectVideoMode
  Major opcode of failed request:  136 (XFree86-DGA)
  Minor opcode of failed request:  1 (XF86DGAGetVideoLL)
  Serial number of failed request:  61
  Current serial number in output stream:  61

Well, did it work, did you get a picture?
If you did, you might now

 want to install the driver
permanently. Just proceed to do that...
Press Ctrl+C to quit, Enter to continue ---> 

Just an extra warning: the driver (quickcam.ko) and
the utility (qcset) will be now copied into system
directories. If you have already other versions,
they will be overwritten. Verify by giving root password.
=== Entering root mode ===
/usr/bin/install -c -D -m 644 quickcam.ko       

 /lib/modules/2.6.20-15-generic/misc/quickcam.ko
/usr/bin/install -c -D -m 755 qcset /usr/local/bin/qcset
/sbin/depmod -a
=== Leaving root mode ===
Hopefully the driver is now installed and can be loaded
with command
        modprobe quickcam
as root. You can put this command into some startup
script to do it always automatically at boot.
The exact location depends on distribution, and this
script

 is yet too dumb to do this automatically.
Press Ctrl+C to quit, Enter to continue ---> 

Goodbye...