root@debian:~# dmesg | grep -i video
[    0.337337] pci 0000:00:02.0: Video device with shadowed ROM
[    8.356930] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[    8.359853] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input5
[   10.486697] Linux video capture interface: v2.00
[   11.354560] uvcvideo: Found UVC 1.00 device <unnamed> (046d:081b)
[   11.373523] uvcvideo: Found UVC 1.00 device Integrated Webcam (0c45:63e3)
[   11.392702] usbcore: registered new interface driver uvcvideo
[   11.392711] USB Video Class driver (1.1.1)
[  138.499406] uvcvideo: Failed to submit URB 0 (-28).
[  138.521880] WARNING: CPU: 1 PID: 786 at /build/linux-M5bqDz/linux-3.16.7-ckt11/drivers/media/v4l2-core/videobuf2-core.c:2123 __vb2_queue_cancel+0xf5/0x150 [videobuf2_core]()
[  138.521888] Modules linked in: nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc joydev wl(PO) uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common ums_realtek usb_storage iTCO_wdt iTCO_vendor_support videodev media dell_laptop compal_laptop dcdbas coretemp evdev snd_usb_audio psmouse snd_usbmidi_lib i915 serio_raw snd_rawmidi cfg80211 snd_seq_device pcspkr lpc_ich mfd_core i2c_i801 rfkill shpchp drm_kms_helper snd_hda_codec_realtek drm snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_timer i2c_algo_bit i2c_core rng_core battery snd soundcore ac video button acpi_cpufreq processor fuse autofs4 ext4 crc16 mbcache jbd2 sg sd_mod crc_t10dif crct10dif_generic crct10dif_common ata_generic ata_piix libata scsi_mod uhci_hcd ehci_pci
[  138.522163]  [<f82e1515>] ? __vb2_queue_cancel+0xf5/0x150 [videobuf2_core]
[  138.522172]  [<f82e1515>] ? __vb2_queue_cancel+0xf5/0x150 [videobuf2_core]
[  138.522189]  [<f82e1515>] ? __vb2_queue_cancel+0xf5/0x150 [videobuf2_core]
[  138.522198]  [<f82e2add>] ? vb2_internal_streamoff+0x3d/0xd0 [videobuf2_core]
[  138.522216]  [<f82c0f25>] ? uvc_queue_enable+0x55/0x90 [uvcvideo]
[  138.522226]  [<f82c567c>] ? uvc_video_enable+0x12c/0x190 [uvcvideo]
[  138.522236]  [<f82c25ca>] ? uvc_v4l2_do_ioctl+0xaea/0x12f0 [uvcvideo]
[  138.522268]  [<f8369df7>] ? video_usercopy+0x267/0x580 [videodev]
[  138.522278]  [<f82c1ae0>] ? uvc_v4l2_open+0x120/0x120 [uvcvideo]
[  138.522290]  [<f8369d93>] ? video_usercopy+0x203/0x580 [videodev]
[  138.522300]  [<f82c1ae0>] ? uvc_v4l2_open+0x120/0x120 [uvcvideo]
[  138.522342]  [<f82c128a>] ? uvc_v4l2_ioctl+0x2a/0x60 [uvcvideo]
[  138.522351]  [<f82c1ae0>] ? uvc_v4l2_open+0x120/0x120 [uvcvideo]
[  138.522363]  [<f836565e>] ? v4l2_ioctl+0xee/0x130 [videodev]
[  138.522374]  [<f8365570>] ? v4l2_open+0xf0/0xf0 [videodev]
[ 5145.808072] video LNXVIDEO:00: Restoring backlight state

root@debian:~# ls -lad /dev/video*
crw-rw---- 1 root video 81, 0 Jul 27 12:15 /dev/video0
crw-rw---- 1 root video 81, 1 Jul 27 12:15 /dev/video1