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Webcam not Detected in /dev

Hello,

i have this new laptop. but cant find the built-in camera in /dev/.

i tried the ff:

Code:

$lsusb

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 001 Device 002: ID 5986:0241 Acer, Inc

Bus 001 Device 003: ID 0bda:8189 Realtek Semiconductor Corp. RTL8187B Wireless 802.11g 54Mbps Network Adapter

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

my webcam is being detected correctly as Bus 001 Device 002: ID 5986:0241 Acer, Inc.

also i tried:

Code:

$lsusb -v

and i noticed that it is listed in /dev/bus/usb/001/ as 002. i dont know what this means.
i expected the webcam to be listed in /dev as video0.

other info:

Code:

$lsmod | grep video

uvcvideo              45415  0

videodev              26099  1 uvcvideo

v4l1_compat            10806  2 uvcvideo,videodev

i2c_core              12093  1 videodev

usbcore                91985  5 rtl8187,uvcvideo,ohci_hcd,ehci_hcd

video                  15391  0

output                  1224  1 video

thermal_sys            9782  3 thermal,video,processor

in other systems, we can

Code:

$cat /dev/video0 > test.jpg

and this is what im trying to do with my webcam. so that, hopefully, i can access my webcam using IOCTL.

help please.

thanks in advance.

Yeah, I have an AcerAOD250, and my builtin cam shows as usb.
It seems strange, but there is nothing nefarious here.

Rhetorical it is just silly to have a Universal port with a dedicated connection. Its universality being unnecessary...
But, perhaps is was cost or resource effective to use an USB port for the camera.

Code:

# lsusb | grep cam

Bus 001 Device 002: ID 064e:d101 Suyin Corp. Acer CrystalEye Webcam

# dmesg | grep uvc

uvcvideo: Found UVC 1.00 device WebCam (064e:d101)

usbcore: registered new interface driver uvcvideo

# v4l2-ctl --all 

Driver Info:

        Driver name  : uvcvideo

        Card type    : WebCam

        Bus info      : usb-0000:00:1d.7-2

        Driver version: 256

        Capabilities  : 0x04000001

                Video Capture

                Streaming

Format Video Capture:

        Width/Height  : 320/240

        Pixel Format  : 'YUYV'

        Field        : None

        Bytes per Line: 640

        Size Image    : 153600

        Colorspace    : Unknown (00000000)

Crop Capability Video Capture:

        Bounds      : Left 0, Top 0, Width 320, Height 240

        Default    : Left 0, Top 0, Width 320, Height 240

        Pixel Aspect: 1/1

Video input : 0 (Camera 1: ok)

Streaming Parameters Video Capture:

        Capabilities    : timeperframe

        Frames per second: 15.000 (15/1)

        Read buffers    : 0

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My camera works fine... test yours out using luvcview(). It seems to me that image capture: cat /dev/video0>img.jpg; would be impossible until the device was put up.
You can peruse the source and find out how luvcview() interfaces with the camera.
http://mxhaard.free.fr/spca50x/Investigation/uvc/

Code:

# luvcview -f yuv

luvcview version 0.2.1 

Video driver: x11

A window manager is available

video /dev/video0 



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