关于linux下DNW的一个奇怪问题

我用的友善的Mirco2440SDK，有两块核心板，一个是64M，一个128M
系统是fc14
发现一个奇怪的问题

调试时都是用128M的核心板子
然后按照网上的流程装了dnw for linux
可以用
可是当我换成64m的核心板时，dnw 老是不可以用
内核模块可以加载成功 secbulk.ko
但是当插上usb时 dmesg 消息为
611.547551] usbcore: registered new interface driver secbulk
[ 637.539046] usb 7-1: new full speed USB device using uhci_hcd and address 10
[ 637.653055] usb 7-1: device descriptor read/64, error -71
[ 637.868175] usb 7-1: device descriptor read/64, error -71
[ 638.071186] usb 7-1: new full speed USB device using uhci_hcd and address 11
[ 638.185052] usb 7-1: device descriptor read/64, error -71
[ 638.399067] usb 7-1: device descriptor read/64, error -71
[ 638.602053] usb 7-1: new full speed USB device using uhci_hcd and address 12
[ 639.011046] usb 7-1: device not accepting address 12, error -71
[ 639.164052] usb 7-1: new full speed USB device using uhci_hcd and address 13
[ 639.573154] usb 7-1: device not accepting address 13, error -71
[ 639.573180] hub 7-0:1.0: unable to enumerate USB device on port 1

用 lsmod 查看模块
secbulk 2302 0
常识了很多次
包括从新编译模块，删除了再加载，重启等等步骤
还是不能用
没有办法 只好再换回128M的核心板
然后dnw又可以使用了
[ 756.766161] usb 7-1: new full speed USB device using uhci_hcd and address 14
[ 756.926082] usb 7-1: New USB device found, idVendor=5345, idProduct=1234
[ 756.926089] usb 7-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 756.926093] usb 7-1: Product: SEC S3C2410X Test B/D
[ 756.926097] usb 7-1: Manufacturer: System MCU
[ 756.929177] secbulk:secbulk probing...
[ 756.929181] secbulk:bulk out endpoint found!
[ 848.500086] usb 7-1: USB disconnect, address 14
[ 848.500157] secbulk:secbulk disconnected!
[ 849.456052] usb 7-1: new full speed USB device using uhci_hcd and address 15
[ 849.615259] usb 7-1: New USB device found, idVendor=5345, idProduct=1234
[ 849.615265] usb 7-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 849.615270] usb 7-1: Product: SEC S3C2410X Test B/D
[ 849.615273] usb 7-1: Manufacturer: System MCU
[ 849.618335] secbulk:secbulk probing...
[ 849.618339] secbulk:bulk out endpoint found!

有谁用过dnw for linux
可是帮忙解释一下不
我的dnw是在友善下载的 http://download.csdn.net/source/3076530