port-macppc/56297: reboot doesn't

[he%NetBSD.org@localhost]

>Number:         56297
>Category:       port-macppc
>Synopsis:       reboot doesn't
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-macppc-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jul 03 16:50:00 +0000 2021
>Originator:     he%NetBSD.org@localhost
>Release:        NetBSD 9.99.85
>Organization:
I try...
>Environment:
System: NetBSD malus.urc.uninett.no 9.99.85 NetBSD 9.99.85 (MALUS) #13: Tue Jun 29 13:05:35 CEST 2021  he%malus.urc.uninett.no@localhost:/usr/obj/sys/arch/macppc/compile/MALUS macppc
Architecture: powerpc
Machine: macppc
>Description:
	This is seen on a G4 MacMini.

	Rebooting via "shutdown -r" actually doesn't manage to reset
	the machine anymore.  Not sure when it stopped working...

	The kernel message buffer appears as usual, and ends with

[ 972.4223960] syncing disks... done
[ 972.4324031] unmounting file systems...
[ 972.6824017] unmounting done
[ 972.6824017] turning off swap... done
[ 972.6824017] rebooting

	But instead of actually rebooting, the display remains the
	same, and apparently the fan control is disabled, because the
	fan spins up.

>How-To-Repeat:
	See above.
>Fix:
	Sorry, don't know.