我正在尝试在Synology NAS（arm，linux内核3.2.40）上安装网络摄像头。 我已经编译并安装了内核模块，它们似乎工作正常。这是插入模块和插入摄像头时的内核输出（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
这是lsusb输出：
# 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
但是，我无法访问相机：
# v4l2-ctl --all
Failed to open /dev/video0: No such device
in strace：
open("/dev/video0", O_RDWR) = -1 ENODEV (No such device)
我尝试过不同的相机型号，C270在另一台电脑上（工作正常），删除/ dev / video0并重新创建它（mknod / dev / video0 c 81 0），更改权限等等但我得到了同样的错误...
crw-rw-rw- 1 root video 81, 0 Jun 14 12:07 /dev/video0
lsmod显示uvcvideo不用于相机：
# 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
有什么想法吗？