System Profiler says DIMM in slot-3 get ECC error(ECC correctable error : 177), so I attempted to swap DIMM one another between the DIMM which is supposed to be bad and the DIMM is supposed to be OK, though system Profiler always says DIMM in slot-3 is bad.
Is it just DIMM problem, or other hardware trouble?
I'd wait a bit for more reliable and better advice, I don't know a lot about memory woes. But what I do know is that I put some new RAM in my machine recently and in SP one Dimm read something like yours. I didn't look into it then but the next day the message had disappeared.
It could be the Dimm, on the other hand it could be the slot. A call to the manufacturer in the first case, a call to Apple if the second. It's a new Mac, don't settle for less than perfection.
Also, there's a little free utility you might want to try called Rember that checks on RAM. You can google it. If you can stand the wait time of the program it might show something to take action on.
Good luck!
I checked with Rember, as well as AHT, and they say everything is OK.
And I had the very first panic last Tuesday, and I found a person who post about panic which almost same panic I had.
he said that the logic board died shortly thereafter.
Well, this is stock Mac Pro, so I'd call to Apple, anyway.
You're most welcome. Just wish there was a way to troubleshoot it from your end. Yeah, new machine, it may be a pain, but the ball is in Apple's court, you shouldn't be having any problems.
Well, again, Welcome to the Boards, and come round more often, y'hear? 😉
Early on I bought some 3rd party RAM.... very rare and expensive back in Sept '06... and had a couple parity errors kicking out. But in the next couple days they went into 1000 range and returned them, but the damage was done. I had errors show up each time I ran and reran Disk Warrior on my backups and clones.
Eventually the only cure was to reinstall the OS from scratch. Otherwise, I would see symptoms that looked like driver extension conflicts, probably from writing bad data to those files, files that change often, cache files and such, and it was taking too much time and effort. The fresh format and install was actually easier in the long run. And after that I was careful to test and what I bought as far as memory goes.
Rember puts a GUI around Memtest. Memtest though can be run concurrently, so you can test 20 chunks of memory in small bits of 256MB or whatever you want, run 4-5 cycles, and have it done in two hours instead of testing 4GB or someting in one long pass at a time. Some people do pull half the memory, test that, then swap and try the other half, too.
One reason to buy from someone that sells a lot of Mac Pro memory. And at least DDR3, even ECC, isn't as exotic as the older DDR2 FBDIMMs.
Curiously, when I just booted from a freshly made clone, the memory checker came up to say there were problems with the memory in one of the slots. It said the slot was vacant. I'll check it out further tomorrow but for now I just took two out of the modules and I'll do some more three channel testing. But why my main startup disk didn't report any errors, I don't know.
I'd reboot back to the original (maybe after Disk Warrior says it's okay) and of course look at System Profile -> Memory and system.log to see what entries there might be, if any.
Hi, The hatter and samsara. Thanks for your response.
I tried extended Apple Hardware Test several times in a row today, and first attempt was everything OK, though since second try, it reported error codes like following.
For my part I don't know what that means at all. Strange that AHT just decided to pick up on it though.
I still think your best bet is having Apple take a look at your machine. I know it's a big pain if they make you bring it in yourself, which they probably will, but I think they would either fix it quickly or replace it for you.
After I bought my RAM from a company called OWC here in the States, after I ran across that error message, I called their support staff and they sent me a list of things to try, some more applicable to our machines than others. If you'd like me to forward that email to you I'd be glad to do so. Just click on my profile and you'll see my address.
Good luck.
Hi
I have the same symptoms on my machine I bought on friday 29. of may.
Kernel panics on migration and compressing video files.
Exchanging RAM did not help. Always eec error on 3. and 4. slot. But only after running for some time. Not directly after startup. Very hard to prove the dealer the malfunction. Only have kernel panic logs and a screenshot of system profiler.
I wish I could get another machine.
Working now for six days on this problem.
You are well, well, within your rights to get a new machine. Don't take "no" for an answer. Go over the dealers head and call Apple directly if you have to. Do it for yourself, and do it for the rest of us.
There's no reason,
none, that you should spend 6 days trying to sort out a problem like this on a brand new machine.
It is a sealed machine out of the box with 3 gb ram.
Thanks Samsara for your encouragement.
The machine is at the reseller for an extensively hardware check.
I hope that the RME drivers are not a cause.
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Memory module problem?
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