Hello,
Wondering if this is normal in Mac OS Monterey. I have more modules installed but the text is reading 8 modules are in use see screen shot. Also I noticed that the graphics of the memory modules looks distorted. So wondering if this is an issue with my Mac Pro 2019 or could it be Monterey related?
Thanks!
Mac Pro (2019)
This is not a Monterey issue, it is a Hardware failure. This issue is with the Error-Correcting Code (ECC) RAM used in Mac Pro models.
The error-correction logic is used very aggressively at startup. ANY error, correctible or not, that occurs during the very brief testing done at startup causes ALL the involved modules to be set aside and their slots declared "Empty". Mac OS will not use them because they are bad.
User Tip: Mac Pro and Error Correcting Co… - Apple Community
Wow! Thank you for this information. Would you happen to know if this mean my actual Mac Pro 2019 is failing or is it the memory module? I held the "D" key on startup to run a hardware test and it says there were no issues found.
Module failure is vastly more likely than any other failure. Be sure you don't fool yourself by thinking that if you re-seat the modules in their slots and it goes away it is 'cured'. One of the modules in that group of slots is Bad,
If the RAM modules in the marked 'empty' slots are aftermarket RAM, return that group to the seller and they can run it on a memory tester until THEY figure out what's wrong. It's not your problem. Check the vendor stickers, (that's all the 'proof of purchase that should be required) and ask them to send you replacements for the ones in slots marked empty, then return the ones from those slots.
Hello, The slots declared empty should be empty. The text output says I a using 8 out of 12 memory slots. But it should say that I am using 4 out of 12. Because I have only 4 memory modules installed.
Thanks for your kind words.
Readers who answer here are all other users like you, not Apple employees.
I get my 'pat on the back' when what is suggested helps you make progress, even if your progress is in a completely indirect way.
Okay, I was thinking it might be Monterey OS related. Here is the memory output from system report.
Okay thanks again for the reply. I just tried it with the Apple issued default 32GB of ram. I only have the 4 modules installed (4x8) but it still says using 8 of 12 slots?
That COULD mean you removed the bad ones.
were the ones removed the same as the slots declared 'empty'?
I would bet on a bug in the software assessing the number of slots in use before anything else.
compare to presentation:
menu > about this Mac > (system report) > memory
ah, that's better.
You said you had four installed, and four are showing as "OK". I believe that display long before that other one.
Thank you for the help, knowledge and quick responses. I really appreciate that.
Memory Preference Pane (Mac OS Monterey)
