misc/100912: kbdmux prevents keyboad input during panic or reboot process

[Atsuo Ohki]

>Number:         100912
>Category:       misc
>Synopsis:       kbdmux prevents keyboad input during panic or reboot process
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jul 27 09:40:13 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Atsuo Ohki
>Release:        6.1-Release
>Organization:
GSSM, University of Tsukuba, Tokyo
>Environment:
FreeBSD smr01 6.1-RELEASE-p3 FreeBSD 6.1-RELEASE-p3 #2: Thu Jul 27 17:11:34 JST 2006     root at smr01:/usr/src/sys/i386/compile/SMP  i386
>Description:
As to 6.0-Release, I can reboot the machine by pressing space bar after the
message,
        The operating system has halted.
        Please press any key to reboot.

but, I can't on 6.1-Release.

>How-To-Repeat:
default setting always repeat the problem.
type "shutdown -h now" and press space bar after the above message to reboot,
but nothing happens.

>Fix:
disable kbdmux at boot time.
put hint.kbdmux.0.disabled="1" into the file /boot/device.hints.

During shutdown process, kbdmux should actively poll the underlaying
phisical(?) keyboard.

>Release-Note:
>Audit-Trail:
>Unformatted: