PPC G5-Quad panic kernel woes

I thought about that, but as you can read above, the problem showed itself on various occasions after I removed the dust.

Also, it's hard to imagine that the dust could have caused kernel panics.

My guess is I won't know until it happens again and the machine dies. 😟

The issue came back yesterday. 😟

The last time applejack ran, it reported first a kernel panic (RELEASE PPC,

We are hanging here...

Any more ideas?

This is very helpful, BDAqua. I'm bringing it to the shop either today or tomorrow, and this will be another tip for the technician.

Thanks. 🙂

I'm back, still struggling with this issue.

I was able to get the G5 Quad to boot from the ASD 2.6.3 DVD. Without prompting me, it ran the Thermal Calibration and, after considerable time working on each, reported that CPU 0 and CPU 1 passed both tests.

If it were a thermal post problem, I imagine it would have manifested itself in those 30 minutes or so, but it did not. Then it continued automatically, and gave me a bunch of lines, culminating in

Invalid memory access at

%SRR0: 00000000.00050e34

and

SRR0: 10000000.02083030

later again:

Invalid memory access at

%SRR0: 00000000.ff846 04c SSR1:1

%SRR0: 00000000.ff846 04c

Obviously I have no clue what any of that means. I'm hoping that points to bad RAM, as that is the easiest to fix. Is any of that a hint as to which memory banks are affected?

Thanks in advance.

Nuts! Now it has been booted up to the OS X 10.3.6 install DVD for almost 30 minutes.

Repaired Disk with DU and it did find some stuff to repair.

Repaired permissions and verified disks alternatively a number of times,

rebooted, and it's working like nothing had ever happened.

I were still sane, this would have been enough to drive me insane. I'm not declaring victory yet. I'll report back.

I'm glad you still suspect RAM.

In any event, I got a translucent gray screen on my secondary monitor, then the machine froze again, but without a kernel panic. Fans at high speed, obviously.

I forgot to mention that with ASD, I had gotten the flashing folder with the question mark, yet some command line interface kept running simultaneously with very thin black type on a white screen.

I'm letting it cool down a bit just in case, though nothing feels hot.

That is absolutely awesome, BDA ! That takes off all the stress of my situation. And they offer an extended 15 month warranty for $95 !

I might get it just to keep on standby!

BDAqua wrote:

…but if the drive repeatedly needs repairs I'd suspect RAM despite any RAM test.

Right on the button, BDAqua! Even the simplest RAM tests (Rember and Tech Tools) show two of the slots as empty, and the machine is maxed out at 8 x 2 GB = 16 GB total. If even one of the pair is bad, that's enough for the both of them to be reported as empty.

Now even "About this Mac" shows only 12 GB, when even this morning it was showing 16 GB.

Thanks a million for your help, your tenacity and your saintly patience. 🙂 ✅

My aim is to keep the G5 in best running condition. I'd have no need for BlueRay in that machine (to be honest, I've never looked into BlueRay at all, not quite sure what it is). The only thing I foresee running in the optical drive of the G5 Quad are Apple install and rescue CDs/DVDs, Disk Warrior and the like.

Booting from the current optical drive, everything runs at a glacial pace.