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Re: Prod kernel hangs on mac mini



Thanks for the suggestion.  I did try ofwboot.elf at one point, although I can't recall what happened with it.  I was learning to deal with open firmware...

This morning when I booted it up I got an ominous sound: three beeps.  This apparently means bad RAM, so I started to think maybe the problem is my hardware.  However after opening it up, vacuuming it out and re-seating the RAM , it seems OK at least according to apple's hardware test.

Meanwhile I also picked up an iBook G4: trying to load 9 on that leads to a very similar problem; it runs the install OK but doesn't boot the installed kernel.  This time it doesn't enter a loop trying to load ddb, just hangs after the 4x memory region lines.

However, I had more success with 10-rc1.  The iBook installs and boots into the system.  Progress!  Also the mini has just installed the rc version, and I booted into that too.

Now I'd like to work out how to get some extra software installed, so learning about pkgsrc...

Thanks,
Alex


On 11/11/23 14:42, Valery Ushakov wrote:
On Sat, Nov 11, 2023 at 02:05:22 +1300, Alex King wrote:

production kernel it panics.  ofwboot prints some messages, then the kernel
boots and prints a couple of maybe normal lines about memory regions, then
comes a "trap" in ISI...

Stuff scrolls past pretty quick, I get a bunch of "Faulted in DDB,
continuing", and then stuff about tracebacks and skipping crash dump on
recursive panic scrolls repeatedly.
I don't think I tried 9 series, my shell mini still runs 8 and my test
mini runs 10, but I don't think 9 had any major problems.

As a random thought - try using ofwboot.elf instead of ofwboot.xcf -
some memory mapping numerology might be at play here (different kernel
size, compressed, etc - PRs 44895, 49907).

-uwe


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