Upgraded to mountain Lion Heating issues

how did the post by dropping solve your issue?

Thanks for this... Though I remain concerned why my iMac went from a quiet, speedy, available machine to a weird, noisy, overheating, unreliable piece of equipment due to what seems to be a simple OS upgrade.

Yes, its a problem. SMC fanm control will help cool down your machine and avoid any permenant damage. but please do monitor it.

I hope that Apple will release a fix very soon.

In re; Nexus 7: It's the Future... You heard it here first 😉

Thanks for the info, Ivan Clarke1.

I can understand indexing going on for an extended period of time after a major installation.

But what bugs me here are those short bursts activity which suggests – in my non-professional mind – a process that crashes immediately after it is initiated and then restarts and gets caught in an endless loop.

This is suggested by the total absence of feedback whatsoever from the Spotlight Menu-extra and Search text field.

YM

I'm on it... SMC stat.

Edit: Thank you for this... I just got a jolt back to why I love Mac devs... That shiny stuff had me afraid for our future.

wow for the money it looks great!

No, really this is lovely.

Though I am curious: Any ideas as to what fans are dealing with what problem, and thusly: which should be monitored?

It would seem like they are all going crazy, should I view this as purely blind, or this to be triaged? Activity Monitor showed no abnormailty besides unsettling HDD behavior...

Edit: Oh do I miss the days of having a case to open.

I don't know of any other tool, but if you have a bootable backup of a former System on an external drive or DVD, I would try to find out if it is a hardware problem by booting on it and see if it still overheats.

YM

The fans solution is merely there to keep your CPU temprature down. this is just an interim measure. you can fiddle around and save some settings and instantly switch to whatever fan setting you need to keep the operating temprature to normal levels.

Had the same issue, thought it was due Spotlight reindexing data, but it lasted several days.

Try to open Activity Monitor, click CPU and you will see what is loading your processor the most. Try to stop that process.

In my case it was TVMobili app, probably incompatible with ML. I have uninstalled it together with all related files and now its much better.

tonjik

In my case, as I mentioned earlier, it is mdworker that is using almost 100% of CPU usage. I should say WAS using almost 100% of CPU usage. Because I think I definitely fixed the problem.

I had installed Mountain Lion 10.8 over a Lion 10.7.4 clone on an external drive so as not to nuke my internal 10.7.4 in case something went wrong.

As all went well, and after a day or two of testing and updating, I "Carbon Copied" my working brand new Mountain Lion back to my internal drive. And that is when this mdworker 100% CPU usage started the overheating problem.

This morning, I remembered that yesterday, while cloning back my Mountain Lion installation to my internal drive, I had declined Carbon Copy's invitation to also create a 10.8 recovery partition, thinking that it wouldn't be of any use.

I then decided to start over Mountain Lion's cloning to my internal drive, but this time, WITH the installation of the 10.8 Recovery Partition.

I don't know how to explain – or if there is a link – but Mountain Lion is now working flawlessly on my internal drive, and mdworker seems happy and has been quiet for more than 2 hours now. My processor's temperatures went down from a steady 55-58 C yesterday to a mere 32-34 C eversince.

Anybody knows if there is a link between Spotlight indexation os a Mountain Lion partition and the existence or not of its relevant Recovery partition ?

YM

Same heating problem (and battery drainage). I upgraded my macbook air summer 2012 to ML on last Friday. The first 2 days were okay. Yesterday (Monday), I fully charged it, and when I was off from work, I unplugged and made it to sleep. Around midnight, when I wanted to use it for some work, I found it to be warm and even heated up the documents put next to it in my bag. The battery drained to ~50%. I used it for ~20 min without plugging in (only for internet and reading some ducuments). This morning, I got to plug it to power so I could wake it up!

In my case the battery drain/overheating issue seems strongly correlated to this one:

https://discussions.apple.com/thread/4154209?start=0&tstart=0

Wondering if anyone else sees CPU spikes on CalendarAgent, with the console continuously spitting out "CalendarAgent: Unexpected EOF, returning last token as fallback" errors.