Почему этот модуль не загружается?

Я установил сторонний пакет librealsense. В качестве части загрузки он устанавливает uvcvideo для компиляции в качестве модуля ядра. Как только это будет сделано, я перезагружусь до модифицированного ядра. Я вижу файл uvcvideo.ko, но по какой-то причине он не загружается. Что здесь происходит?

$ sudo modprobe uvcvideo
modprobe: ERROR: could not insert 'uvcvideo': Unknown symbol in module, or unknown parameter (see dmesg)

$ uname -r
4.4.0-47-generic
$ ls /lib/modules/4.4.0-47-generic/updates/dkms/
uvcvideo.ko  vboxguest.ko  vboxsf.ko  vboxvideo.ko

$ dmesg | grep uvcvideo
[   44.581338] uvcvideo: Unknown symbol vb2_queue_init (err 0)
[   44.581344] uvcvideo: Unknown symbol v4l2_fh_exit (err 0)
[   44.581354] uvcvideo: Unknown symbol video_ioctl2 (err 0)
[   44.581357] uvcvideo: Unknown symbol media_device_unregister (err 0)
[   44.581361] uvcvideo: Unknown symbol vb2_streamoff (err 0)
[   44.581363] uvcvideo: Unknown symbol media_entity_create_link (err 0)
[   44.581368] uvcvideo: Unknown symbol vb2_queue_release (err 0)
[   44.581373] uvcvideo: Unknown symbol vb2_poll (err 0)
[   44.581377] uvcvideo: Unknown symbol v4l2_fh_del (err 0)
[   44.581379] uvcvideo: Unknown symbol v4l2_fh_add (err 0)
[   44.581381] uvcvideo: Unknown symbol vb2_ops_wait_finish (err 0)
[   44.581391] uvcvideo: Unknown symbol vb2_dqbuf (err 0)
[   44.581395] uvcvideo: Unknown symbol __media_device_register (err 0)
[   44.581397] uvcvideo: Unknown symbol v4l2_subdev_init (err 0)
[   44.581403] uvcvideo: Unknown symbol vb2_reqbufs (err 0)
[   44.581405] uvcvideo: Unknown symbol v4l2_device_register_subdev (err 0)
[   44.581411] uvcvideo: Unknown symbol vb2_expbuf (err 0)
[   44.581415] uvcvideo: Unknown symbol video_devdata (err 0)
[   44.581417] uvcvideo: Unknown symbol vb2_streamon (err 0)
[   44.581419] uvcvideo: Unknown symbol v4l2_ctrl_replace (err 0)
[   44.581424] uvcvideo: Unknown symbol media_entity_init (err 0)
[   44.581426] uvcvideo: Unknown symbol vb2_querybuf (err 0)
[   44.581428] uvcvideo: Unknown symbol vb2_qbuf (err 0)
[   44.581434] uvcvideo: Unknown symbol vb2_buffer_done (err 0)
[   44.581437] uvcvideo: Unknown symbol vb2_plane_vaddr (err 0)
[   44.581439] uvcvideo: Unknown symbol v4l2_fh_init (err 0)
[   44.581442] uvcvideo: Unknown symbol video_unregister_device (err 0)
[   44.581444] uvcvideo: Unknown symbol v4l2_prio_init (err 0)
[   44.581448] uvcvideo: Unknown symbol v4l2_event_subscribe (err 0)
[   44.581452] uvcvideo: Unknown symbol vb2_vmalloc_memops (err 0)
[   44.581457] uvcvideo: Unknown symbol v4l2_device_register (err 0)
[   44.581459] uvcvideo: Unknown symbol media_entity_cleanup (err 0)
[   44.581464] uvcvideo: Unknown symbol v4l2_ctrl_merge (err 0)
[   44.581469] uvcvideo: Unknown symbol __video_register_device (err 0)
[   44.581472] uvcvideo: Unknown symbol vb2_ops_wait_prepare (err 0)
[   44.581475] uvcvideo: Unknown symbol vb2_create_bufs (err 0)
[   44.581478] uvcvideo: Unknown symbol v4l2_device_unregister (err 0)
[   44.581480] uvcvideo: Unknown symbol vb2_mmap (err 0)
[   44.581482] uvcvideo: Unknown symbol v4l2_event_queue_fh (err 0)
[   44.581487] uvcvideo: Unknown symbol v4l2_event_unsubscribe (err 0)