Re: keyboard break to debugger broken?

On Jul 5, 2014, at 1:33 PM, John-Mark Gurney <[e-mail]> wrote:

> Peter Jeremy wrote this message on Fri, Jul 04, 2014 at 21:27 +1000:
>> On 2014-Jul-04 02:28:48 -0700, John-Mark Gurney <[e-mail]> wrote:
>>> So, I recently tried to break into the debugger w/ the various key
>>> sequences that I know about, and none of them worked... I've tried
>>> CTRL-ESC, ALT-ESC, CTRL-ALT-ESC, CTRL-PRTSCR, ALT-PRTSCR and
>>> CTRL-ALT-PRTSCR, and many other different ones...   I've verified that
>>> I can sysctl debug.kdb.enter=3D1 to enter the debugger, and the
>>> CTRL-ALT-PAUSE works to suspend the machine, and CTRL-ALT-DEL works
>>> to reboot...
>>> =

>>> Does anyone know if this works?
>> =

>> It works for me on 10.0.  Do you have debug.kdb.break_to_debugger=3D1
>> and hw.syscons.kbd_debug=3D1 (if you're using syscons)?
> =

> Turns out I didn't... and you didn't need to...  emaste helped me
> the other night discover this..  Apparently rwatson changed this and
> the docs never got updated...  I saw BREAK_TO_DEBUGGER, bug it was
> documented as being *serial* only, not syscons...
> =

> I've updated NOTES and added an entry for defaults/loader.conf, but
> more docs need to be updated that BREAK_TO_DEBUGGER or the tunable
> or sysctl needs to be set before if works..
> =


I don=92t know about 10/11 but 9.3 (and probably late 9.2) introduced conso=
le_port
which silently overrides the hint.uart.n.flags=3D0x10 to set which serial p=
ort is
the =91console=92, in my case I have several platforms (mainly sunfire=92s =
from sun) that only
have uart1 available.
somehow, i have the feeling that getting the serial console (needed to run =
serial-over-lab) to
work is getting more in the region of magic than technology.
please, some of us really need the serial console to work so that we can re=
scue servers when
all else fails.

thanks,
	danny


> -- =

>  John-Mark Gurney				Voice: [phone]
> =

>     "All that I will do, has been done, All that I have, has not."
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