kern/58164: The NetBSD 10.0 installed kernel panics on Mac IIci unless there are no Nubus video cards installed

[userm57%yahoo.com@localhost]

>Number:         58164
>Category:       kern
>Synopsis:       The NetBSD 10.0 installed kernel panics on Mac IIci unless there are no Nubus video cards installed
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 17 17:10:00 +0000 2024
>Originator:     Stan Johnson
>Release:        NetBSD 10.0
>Organization:
>Environment:
maciici-1: {2} uname -a
NetBSD maciici-1 10.0 NetBSD 10.0 (GENERICSBC) #0: Thu Mar 28 08:33:33 UTC 2024  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/mac68k/compile/GENERICSBC mac68k
>Description:
The kernel that is installed as part of a NetBSD 10.0 installation on a Mac IIci will crash if there is an attempt to use a Nubus video card (such as the Toby Frame Buffer card). The netbsd-GENERICSBC.gz kernel works only using built-in video and with no other video cards installed.

Note that the NetBSD 10.0 installation kernel (netbsd-INSTALLSBC.gz) works as expected using a Nubus video card; it is only after installation that the installed kernel panics.
>How-To-Repeat:
1) Install NetBSD 10.0 on a Mac IIci (installation with video using an unaccelerated video card such as the Toby Frame Buffer card should work, or use built-in video).
2) The kernel of the newly-installed system will crash if using the Toby Frame Buffer card, or even if using built-in video if the Toby Frame Buffer card is installed.
3) The same result is seen with other unaccelerated video card, such as the RasterOps ColorBoard 264).
>Fix:
A workaround to the problem is to use built-in video with no Nubus video cards installed.