I am trying to install a webcam on a Synology NAS (arm, linux kernel 3.2.40). I have compiled and installed the kernel modules, they seem to work. This is the kernel output when inserting the modules and plugging the camera (Logitech C270):
[ 130.963903] Linux video capture interface: v2.00
[ 136.098356] usbcore: registered new interface driver uvcvideo
[ 136.104135] USB Video Class driver (1.1.1)
[ 145.384393] usb 3-2: new high-speed USB device number 4 using etxhci_hcd_150119
[ 145.628583] uvcvideo: Found UVC 1.00 device USBDevice (046d:0825)
[ 145.726156] input: USBDevice as /devices/pci0000:00/0000:00:00.0/usb3/3-2/3-2:1.0/input/input0
This is the lsusb output:
# lsusb
libudev: udev_has_devtmpfs: name_to_handle_at on /dev: Function not implemented
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 046d:0825 Logitech, Inc. Webcam C270
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
However, I cannot access the camera:
# v4l2-ctl --all
Failed to open /dev/video0: No such device
in strace:
open("/dev/video0", O_RDWR) = -1 ENODEV (No such device)
I have tried different camera model, the C270 on another computer (works fine), deleting /dev/video0 and re-creating it (mknod /dev/video0 c 81 0), changing permissions, etc. but I get the same error...
crw-rw-rw- 1 root video 81, 0 Jun 14 12:07 /dev/video0
lsmod shows that uvcvideo is not used for the camera:
# lsmod
Module Size Used by
uvcvideo 57657 0
videodev 72561 1 uvcvideo
usbcore 147080 7 ehci_hcd,etxhci_hcd,usb_storage,usblp,usbhid,uvcvideo
usb_common 592 1 usbcore
Any ideas?