Dual G5 random shutdowns - PMU?

[decksnap]

My system has randomly shut down twice now in the last two days. Dual G5 2.3. I checked the console log, which I know very little about, and it said this:

localhost kernel[0]: ApplePMU::PMU forced shutdown, cause = -122

Two questions-

what's the -122 code mean?

Do you think resetting the PMU would be the solution to this?

[decksnap]

Interestingly, the Apple support pages say my system doesn't even have a PMU, but rather an 'SMU'. So why does the console say PMU???

link (http://docs.info.apple.com/article.html?artnum=300341)

[iGary]

It is normally a small button under the RAM.

Also try holding CMD-OPT-O-F on startup and then enter reset-all.

[CTSxViper]

My system has randomly shut down twice now in the last two days. Dual G5 2.3. I checked the console log, which I know very little about, and it said this:

localhost kernel[0]: ApplePMU::PMU forced shutdown, cause = -122

Two questions-

what's the -122 code mean?

Do you think resetting the PMU would be the solution to this?

Can you give us an update? Did it solve your problem?

[decksnap]

Nobody's answered either of my questions so I haven't acted on it. Thanks for the bump though. Very curious to see a list of the error codes. And why console says PMU when I have an SMU.

[mercury613]

I had the same problem, but only after updating to OS 10.4.7 from 10.4.5. After several days of extreme frustration, I reinstalled 10.4.5, and all was well.

Today I just tried updating to 10.4.8. Same problem is now happening:

localhost kernel[0]: ApplePMU::PMU forced shutdown, cause = -122

Anybody know what could be going on?

[decksnap]

So you've isolated it to software?

I''m on 10.4.7.

I've tried resetting the SMU, resetting the pram. Got a new surge protector.

I've basically been able to reproduce the problem by opening two or three quicktimes at the same time, and/or adding iTunes into the mix. I will see what happens when I upgrade to 10.8.

[knowhowthief]

http://www.xlr8yourmac.com/systems/Dual_Core_G5_Shutdowns.html

check the console crash log and look for a error report (-122)

google that along with "random shutdowns G5"

the problem is like an epidemic.

extrodinarily random and from what ive learned, no way to ensure a solid fix.

my g5 is getting the CPU and power supply replaced, first time after 6months... i havent even finished payments on this (2nd gen dual 2.5) G5, and im just a kid who relys on his computer to make art and music on... i cant afford a new one, and now at worst ill be using a defective machine that has a trip to the emegency room every so often at MY expense. and if not that, ill just use it constantly fearing it'll crash on me. im sad about this.

but i dont have faith its going to be reliable still...

theres still the logic board, cooling system, video card...

i noticed this problem is occuring with the macbook pros too.

[knowhowthief]

My system has randomly shut down twice now in the last two days. Dual G5 2.3. I checked the console log, which I know very little about, and it said this:

localhost kernel[0]: ApplePMU::PMU forced shutdown, cause = -122

Two questions-

what's the -122 code mean?

Do you think resetting the PMU would be the solution to this?

http://www.gibbilicious.com/gibbilicious/2006/02/troubleshooting_the_mysterious.html

that link explained the error code, -or what could be said for it at least.

[decksnap]

http://www.gibbilicious.com/gibbilicious/2006/02/troubleshooting_the_mysterious.html

that link explained the error code, -or what could be said for it at least.

Thanks for the link... I had read that earlier, and come to the conclusion that basically it means the problem could be almost anything. I have yet to solve it.