QuickCam Team Forums

I'm having the oddity that whenever I run the uvcdynctnrl program, I get the following message in addition to the normal response:

[libwebcam] Unknown custom V4L2 control ID encountered: 134217728 (V4L2_CID_PRIVATE_BASE + 0)
[libwebcam] Invalid menu control choice range encountered.
Indicated range is [ 0 .. 255 ] but querying choice 0 failed.
[libwebcam] Invalid or unsupported V4L2 control encountered: ctrl_id = 134217738, name = 'Exposure, Auto'

I'm using Ubuntu 8.4, am using the latest svn versions of libwebcam and uvc_linux. My webcam is a Communicator Deluxe, UVC Camera (046d:0992).

Any insight into what's triggering the error message?

Lines 1 and 2/3 should be different issues. The first one is still on my to-do list but the second one should have disappeared a while ago. I will check it next week when I get a chance ...

Hi !

Just wanted to say I am having the exact same problem, since upgrading to Ubuntu 8.04...

I recompiled libwebcam & uvcdynctrl, but I am still getting this error.
Hopefully it is easy to fix =))

Edit: I am Using Logitech QuickCam Pro 9000 btw.

Cheers,
ray

It should be easy to fix. That is if I can reproduce it on my Ubuntu 8.04. :-)

Just to be sure: Are you sure there is no uvcvideo.ko somewhere in /lib/modules that gets loaded by the system instead of the SVN version you're compiling?

Darn ! I'm very new to linux ... so yes, there is one such file, I guess it got used instead of my compiled SVN version ...

... A few hints from my flatmate later, (recompiling SVN r178 against new kernel headers, rmmod uvcvideo, modprobe uvcvideo)
I thought I managed to replace this file against the SVN version, but still no worky.

'Investigating' further I found that I now have 2 files/modules lying around :
./usb/media/uvcvideo.ko <--- 'newly' installed SVN r178 driver
./ubuntu/media/usbvideo/uvcvideo.ko <--- distro installed

I will now try to replace one with the other ...
I will give notice, once I have it working,

EDIT:

GOT IT WORKY WORKY !
*ahem*

$ mv ./ubuntu/media/usbvideo/uvcvideo.ko ./ubuntu/media/usbvideo/__uvc__video.k__o
$ rmmod uvcvideo
$ depmod
$ modprobe uvcvideo
$ modinfo uvcvideo
filename: /lib/modules/2.6.24-16-generic/usb/media/uvcvideo.ko



(double) cheers, ray