On Tue, 23 Jan 2007, Florin Iucha wrote:

> > It would be nice to learn exactly why the keyboard stopped working.  Try
> > using the usbmon facility (instructions in Documentation/usb/usbmon.txt)
> > to see what happens when you type on the dead keyboard.  Be sure to turn
> > on CONFIG_USB_DEBUG as well.  And also check /proc/interrupts; each time
> > you hit a key the USB controller should get an interrupt.
> 
> Attached is the output from usbmon, unfortunately this kernel did not
> have CONFIG_USB_DEBUG set.  This is kernel 2.6.20-rc5.
> 
> So, the bus sees some traffic when the keyboard is used, but gdm does
> not receive any keystrokes.

So it's possible that the USB drivers are working correctly but the 
keystrokes are getting lost somewhere in the X server.  Can you switch to 
a VT (or kill the X server entirely) and see if the keyboard works then?

Alan Stern

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