ddb and usb keyboards

[Peter Grehan]

Hi Arun,

> I noticed that I was able to interact with DDB using my usb keyboard 
> when the kernel panics due to a driver bug.
> 
> However, if I try to manually enter DDB using ctrl+alt+esc on the 
> console, DDB doesn't accept any input and I have to power cycle the 
> machine.

  I see the same behaviour :(

> Is there a good explanation for this behavior?

  I can't think of one. I guess it's possible that the USB keyboard/OCHI 
code is being re-entered when this happens, since I guess the key event 
is an upcall into syscons.

  Do you know if this happens with a USB keyboard on x86 ?

later,

Peter.