Hi Alexksandr,

On Friday 18 December 2009 18:39:47 Aleksandr Zagorodnikov wrote:
> I have notebook hp tx2650er and my UVC device is not listed.

Thanks for the report.

[snip]

> # dmesg | egrep -i uvc
> uvcvideo: disagrees about version of symbol
> v4l_compat_translate_ioctl
> uvcvideo: Unknown symbol v4l_compat_translate_ioctl
> uvcvideo: disagrees about version of symbol video_devdata
> uvcvideo: Unknown symbol video_devdata
> uvcvideo: disagrees about version of symbol
> video_unregister_device
> uvcvideo: Unknown symbol video_unregister_device
> uvcvideo: disagrees about version of symbol video_device_alloc
> uvcvideo: Unknown symbol video_device_alloc
> uvcvideo: disagrees about version of symbol
> video_register_device
> uvcvideo: Unknown symbol video_register_device
> uvcvideo: disagrees about version of symbol video_usercopy
> uvcvideo: Unknown symbol video_usercopy
> uvcvideo: disagrees about version of symbol
> video_device_release
> uvcvideo: Unknown symbol video_device_release
> uvcvideo: disagrees about version of symbol
> v4l_compat_translate_ioctl
> uvcvideo: Unknown symbol v4l_compat_translate_ioctl
> uvcvideo: disagrees about version of symbol video_devdata
> uvcvideo: Unknown symbol video_devdata
> uvcvideo: disagrees about version of symbol
> video_unregister_device
> uvcvideo: Unknown symbol video_unregister_device
> uvcvideo: disagrees about version of symbol video_device_alloc
> uvcvideo: Unknown symbol video_device_alloc
> uvcvideo: disagrees about version of symbol
> video_register_device
> uvcvideo: Unknown symbol video_register_device
> uvcvideo: disagrees about version of symbol video_usercopy
> uvcvideo: Unknown symbol video_usercopy
> uvcvideo: disagrees about version of symbol
> video_device_release
> uvcvideo: Unknown symbol video_device_release

Those errors are caused by loading a version of the uvcvideo driver compiled 
from a linuxtv.org repository with core v4l modules provided by your 
distribution. You should use the core v4l modules from the uvcvideo tree.

> dmesg | grep uvc
> uvcvideo: Found UVC 1.00 device CKF7073 (04f2:b103)
> uvcvideo: Failed to query (135) UVC control 1 (unit 0) : -32 (exp.
> 26).
> uvcvideo: Failed to query (129) UVC control 1 (unit 0) : -32 (exp.
> 26).
> uvcvideo: Failed to initialize the device (-5).
> usbcore: registered new interface driver uvcvideo

Ouch. That seems to be a very buggy webcam. Could you please try to load the 
uvcvideo driver with quirks=0x100 and see if it helps ?

-- 
Regars,

Laurent Pinchart
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