Re: Raon Everun (Microchip multifunction HID)

On Fri, 5 Oct 2007, Bill Gribble wrote:

> Alan Stern writes:
> > To start, try building a kernel without all the HID debugging, but do
> > enable CONFIG_USB_DEBUG.  Then post the dmesg output showing what 
> > happens during startup.
> 
> Ok, done.  Here's dmesg output with CONFIG_USB_DEBUG.  The builtin
> keyboard never worked during this boot/shutdown cycle.  I believe the
> EXPHID0x25 device is the keyboard/mouse/touchscreen/gamepad.

Yes, it is.  It looks like you didn't plug in your external keyboard
during the test -- but you must have used it to collect the dmesg log.

Okay, the log doesn't show anything particularly suspicious.  The next
step is to use usbmon.  There are instructions in the kernel source
file Documentation/usb/usbmon.txt.

What you will have to do is this:

	echo -n 1-4 >/sys/bus/usb/drivers/usb/unbind

That will unbind all the drivers from the EXPHID0x25 device.  Then 
start up the usbmon monitoring for bus 1, and while it is running do:

	echo -n 1-4 >/sys/bus/usb/drivers/usb/bind

That will rebind all the drivers, and the usbmon log will capture all 
the traffic that occurs.  Then with usbmon still running, type some 
characters on the builtin keyboard.  Maybe also try using the other 
things.

Finally, stop usbmon and post the log.  We'll see what it reveals.

Alan Stern



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