kernel debugger and usb keyboard

[Alexander Best]

just tried settings `sysctl debug.kdb.panic = 1`. if i use this way to enter
the kernel debugger my usb keyboard works. if i type "continue" however the
kernel panics and the kernel debugger gets yet entered again, but without the
keyboard working.

i don't know how to produce backtraces since the keyboard doesn't work.

the other way of entering the debugger without my keyboard working was to
simple press "ctrl+ast+esc".

alex

Hans Petter Selasky schrieb am 2009-08-03:
> On Monday 03 August 2009 20:28:56 Alexander Best wrote:
> > to be sure i just updated my sources and rebuild/reinstalled the
> > kernel.
> > i'm now running

> > FreeBSD otaku 8.0-BETA2 FreeBSD 8.0-BETA2 #2 r196050: Mon Aug  3
> > 18:54:46
> > CEST 2009     root at otaku:/usr/obj/usr/src/sys/ARUNDEL  i386

> > still when i hit the panic key combo i'm unable to use my usb
> > keyboard in
> > the kernel debugger.

> > alex

> This is maybe because the CPU is in the USB stack already. What is
> the
> backtrace?

> If you use the panic sysctl, does the keyboard work then?

> --HPS