kbdmux + ddb = hard freeze

[Dominique Goncalves]

Hi,

On 5/21/06, Yar Tikhiy <yar at comp.chem.msu.su> wrote:
> Just to save other folks' time, I'd like to remind that using
> Ctrl+Alt+Esc to escape to ddb still leads to the system freezing
> hard if kbdmux is enabled--at least with a PS/2 keyboard.  I had
> missed this issue when it was brought up here a month ago, so I
> spent some time to find why my system was hanging dead.  Possible
> workarounds found:
>
> - remove kbdmux from the kernel configuration file
>
> - disable kbdmux in device.hints:
>     hint.kbdmux.0.disabled="1"
>
> - go straight to remote gdb:
>     sysctl debug.kdb.current=gdb
>     sysctl debug.kdb.enter=1

There is a patch here
http://lists.freebsd.org/pipermail/freebsd-current/2006-April/062615.html

HTH

> --
> Yar
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Regards.

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