为什么在我的Ubuntu10.10中插入摄像头之后有时会创建/dev/video0节点而有时则不会创建：
这是在没有创建/dev/video0时的dmesg输出：
capable" parent=1498 profile="/usr/sbin/cupsd" pid=1518 comm="serial" capability=21 capname="sys_admin"
[ 33.029058] eth0: no IPv6 routers present
[ 35.859093] svc: failed to register lockdv1 RPC service (errno 97).
[ 35.868879] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[ 35.876398] NFSD: starting 90-second grace period
[ 35.936470] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=0
[ 1184.882345] usb 1-1: new high speed USB device using ehci_hcd and address 2
[ 1274.941274] usb 1-1: USB disconnect, address 2
[ 1278.009371] usb 1-1: new high speed USB device using ehci_hcd and address 3
[ 1888.681312] usb 1-1: USB disconnect, address 3
[ 1916.760574] usb 1-1: new high speed USB device using ehci_hcd and address 4
[ 2666.785024] usb 1-1: USB disconnect, address 4
[ 2706.120216] usb 1-1: new high speed USB device using ehci_hcd and address 5
[ 2957.795608] usb 1-1: USB disconnect, address 5
[ 2970.748441] usb 1-1: new high speed USB device using ehci_hcd and address 6
烦忙高手指点一下。
