issue accessing webcam from guest in virtual box

• Host - 20.04
• Guest - 18.04
• VirtualBox - 6.1.6_Ubuntu r137129

Webcams

• Integrated webcam : Lenovo EasyCamera
• USB webcam : Webcam C170

Tried:

1. Installing guest addition
2. Updating and upgrading
3. Adding user to vboxgroup
4. Installing guvcview, ffmpeg, cheese
5. sudo apt-get install build-essential linux-headers-``uname -r `

logs from the guest

dmesg|grep uvcvideo

6.170158] uvcvideo: Found UVC 1.00 device Webcam C170 (046d:082b)
6.277828] uvcvideo 1-2:1.0: Entity type for entity Processing 2 was not initialized!
6.277830] uvcvideo 1-2:1.0: Entity type for entity Extension 6 was not initialized!
6.277830] uvcvideo 1-2:1.0: Entity type for entity Camera 1 was not initialized!
6.292313] uvcvideo: Found UVC 1.00 device Lenovo EasyCamera (174f:14e8)
6.576261] uvcvideo 1-3:1.0: Entity type for entity Realtek Extended Controls Unit was not initialized!
6.576262] uvcvideo 1-3:1.0: Entity type for entity Extension 4 was not initialized!
6.576263] uvcvideo 1-3:1.0: Entity type for entity Processing 2 was not initialized!
6.576264] uvcvideo 1-3:1.0: Entity type for entity Camera 1 was not initialized!
6.577563] usbcore: registered new interface driver uvcvideo

ls /dev/video:

/dev/video0 /dev/video1 /dev/video2 /dev/video3

lsusb:

Bus 001 Device 004: ID 174f:14e8 Syntek
Bus 001 Device 003: ID 046d:082b Logitech, Inc. Webcam C170
Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub6.170158]

lsmod | grep uvc:

uvcvideo 94208 0
videobuf2_vmalloc 20480 1 uvcvideo
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_common 45056 2 videobuf2_v4l2,uvcvideo
videodev 200704 3 videobuf2_v4l2,uvcvideo,videobuf2_common
media 53248 4 videodev,videobuf2_v4l2,uvcvideo,videobuf2_common

sudo lsusb -v |grep Camera:

iProduct 1 Lenovo EasyCamera
iConfiguration 4 USB Camera
iFunction 5 Lenovo EasyCamera
iInterface 5 Lenovo EasyCamera
wTerminalType 0x0201 Camera Sensor
wTerminalType 0x0201 Camera Sensor

journalctl -b0 | grep uvc:

May 06 17:01:53 eyebies-VirtualBox kernel: uvcvideo: Found UVC 1.00 device Webcam C170 (046d:082b)
May 06 17:01:54 eyebies-VirtualBox kernel: uvcvideo 1-2:1.0: Entity type for entity Processing 2 was not initialized!
May 06 17:01:54 eyebies-VirtualBox kernel: uvcvideo 1-2:1.0: Entity type for entity Extension 6 was not initialized!
May 06 17:01:54 eyebies-VirtualBox kernel: uvcvideo 1-2:1.0: Entity type for entity Camera 1 was not initialized!
May 06 17:01:54 eyebies-VirtualBox kernel: uvcvideo: Found UVC 1.00 device Lenovo EasyCamera (174f:14e8)
May 06 17:01:54 eyebies-VirtualBox kernel: uvcvideo 1-3:1.0: Entity type for entity Realtek Extended Controls Unit was not initialized!
May 06 17:01:54 eyebies-VirtualBox kernel: uvcvideo 1-3:1.0: Entity type for entity Extension 4 was not initialized!
May 06 17:01:54 eyebies-VirtualBox kernel: uvcvideo 1-3:1.0: Entity type for entity Processing 2 was not initialized!
May 06 17:01:54 eyebies-VirtualBox kernel: uvcvideo 1-3:1.0: Entity type for entity Camera 1 was not initialized!
May 06 17:01:54 eyebies-VirtualBox kernel: usbcore: registered new interface driver uvcvideo
May 06 18:55:00 eyebies-VirtualBox sudo[8787]: eyebies : TTY=pts/3 ; PWD=/home/eyebies ; USER=root ; COMMAND=/sbin/modprobe uvcvideo

Cheese

Failed to allocate required memory.: gstv4l2src.c(658): gst_v4l2src_decide_allocation (): /GstCameraBin:camerabin/GstWrapperCameraBinSrc:camera_source/GstBin:bin18/GstV4l2Src:v4l2src1:
Buffer pool activation failed

related posts

1. Integrated webcam not working after upgrade to 18.04
2. My integrated webcam is not detected by Ubuntu 18.04

1 Answer

I re-installed the extension pack, selected xHCI USB controller instead of the OHCI. Both the webcams (integrated and USB) work!