Hello Everybody !!

I need your help. I have a problem with USB, and I would like to know how I can see what kernel does when I plug a USB device.
So I might know what the problem is .
Is it exist a command to see the "log messages" or anything similar?
Thanks in advance.

tail -100 /var/log/messages | less

Cheers--
Charles

do you know "dmesg" command ?

Hello!!
Thank you very much for your replies.
it has been very useful for see the errors. But I can't correct them.
I hope you could please help me again.

I have a Ethernet Adaptor that I am developing. it uses CDC Ethernet.
I have kernel 2.4.19-16mdk

I have USB support, ... like modules.
in etc/modules I have
usbcore
usb-uhci

When I plug the device I can't use ifconfig eth0 due to the following:
If I don't load CDCEther at first (modprobe CDCEther), when I plug and put dmesg I get
the following:

hub.c: USB new device connect on bus1/2, assigned device number 4
usb.c: USB device 4 (vend/prod 0x58b/0x4) is not claimed by any active driver.
usb.c: registered new driver acm
acm.c: v0.21:USB Abstract Control Model driver for USB modems and ISDN adapters

If I load CDCEther before I plug, I obtain (since I put modprobe CDCEther)

CDCEther.c: CDCEther.c: 0.98.6 7 Jan 2002 Brad Hards and another
usb.c: registered new driver CDCEther
hub.c: USB new device connect on bus1/2, assigned device number 5
CDCEther.c: Imperfect filtering support - need sw hashing
CDCEther.c: Not all required functional descriptors present 0x00000003.
CDCEther.c: No ethernet information found.
CDCEther.c: No ethernet information found.
usb.c: USB device 5 (vend/prod 0x58b/0x4) is not claimed by any active driver.
usb.c: registered new driver acm
CDCEther.c: Imperfect filtering support - need sw hashing
CDCEther.c: Not all required functional descriptors present 0x00000003.
CDCEther.c: No ethernet information found.
CDCEther.c: No ethernet information found.
acm.c: v0.21:USB Abstract Control Model driver for USB modems and ISDN adapters

If I use uhci instead of usb-uhci it happens exactly the same.

I don't know why the kernel load acm instead of CDCEther, because I use Networking Ethernet Control model.

Could you please help me??

Thanks very much again for your help.

Pablo

Thank you to everybody!!
dmesg was very useful to solve the problem.
It was a problem of descriptors.
I need to load CDCEther, and when I plug I only have to put:

ifconfig eth0 10.0.0.1

And all is OK, I can do pings....
But I would like to ask for another favour, Can I get the stadistics, or change the Multicast filters...

Does it exist any commands, or anythig like this ??

Thanks a lot.

Pablo