MacBook temps starting to freak me out..... [Archive]

maclover001

Mar 2, 2009, 09:26 PM

Eidorian

Mar 2, 2009, 09:28 PM

I'd reinstall OS X because it sounds like there's a major problem with the operating system itself. Take it back to Apple if the purchase is fairly recent.

Don't mess with either of those processes. Shy of 100° C is normal until the fans kick in.

Chase R

Mar 2, 2009, 09:32 PM

Ya that's definitely not normal. For regular web-surfing stuff I usually see between 45-55 degrees.

Take it back to Apple if you can.

By the way, how much processing power were those two processes taking up?

maclover001

Mar 2, 2009, 09:44 PM

how much processing power were those two processes taking up?

mount_hfs: 98.6%
syslogd: 92.3%
kernel_task: 85.4%

The rest are <10%

Eidorian

Mar 2, 2009, 09:44 PM

mount_hfs: 98.6%
syslogd: 92.3%
kernel_task: 85.4%

The rest are <10%Looks like a runaway system log as well. Try killing that.

illegallydead

Mar 2, 2009, 10:04 PM

I'd reinstall OS X because it sounds like there's a major problem with the operating system itself. Take it back to Apple if the purchase is fairly recent.

+1. A re-install is generally a good thing to do before you sell, problems or no. And since this is likely a software issue, and not hardware, that should fix your problem.

Don't mess with either of those processes. Shy of 100° C is normal until the fans kick in.

If you are getting that close to 100º without doing any sort of MASSIVE load, you are having a problem.

If what I have heard is correct, at 100º (a.k.a 212º F) the computer will do a core shutdown to keep itself safe. Remember folks, those temperatures are when water boils, certainly not a safe temperature to have CPU's at with most Macs' cooling systems...

Eidorian

Mar 2, 2009, 10:07 PM

If you are getting that close to 100º without doing any sort of MASSIVE load, you are having a problem.

If what I have heard is correct, at 100º (a.k.a 212º F) the computer will do a core shutdown to keep itself safe. Remember folks, those temperatures are when water boils, certainly not a safe temperature to have CPU's at with most Macs' cooling systems...I've heard 110º C for mobile components and a few GPUs. Yes, there are runaway processes in this case though. :p

Name101

Mar 2, 2009, 10:12 PM

right now laying in bed just browsing the web I'm at 41C

there is something wrong.

illegallydead

Mar 2, 2009, 10:18 PM

I've heard 110º C for mobile components and a few GPUs. Yes, there are runaway processes in this case though. :p

Lol yes well, either way, lets agree that getting into triple digits (Celsius) means you are doing some serious transistor cooking :D

illegallydead

Mar 2, 2009, 10:22 PM

right now laying in bed just browsing the web I'm at 41C

there is something wrong.

Mine (Early '07 MB) averages 61ºC... There are plenty of threads discussing average temperatures, but one way or another, < 75º under light load means nothing to be super worried about.

Name101

Mar 2, 2009, 10:34 PM

Mine (Early '07 MB) averages 61ºC... There are plenty of threads discussing average temperatures, but one way or another, < 75º under light load means nothing to be super worried about.

I agree that <75C there is nothing to be worried about.. when i go on Youtube it sits around 65-70C.. but for a computer to be sitting at 93C. doing nothing. I think there is something Wrong..
When I'm doing Rendering on Blender Using 100% of each core My computer never goes higher than 80C..

Name101

Mar 2, 2009, 10:39 PM

For some reason, ever since I decided that I wanted to sell my white MacBook and buy a unibody, the temperatures have been insane, hovering around 87 to 97°C, with the fans screaming, even if there is nothing open. Is this normal?

I opened up Activity Monitor, and "mount_hfs" and "kernel_task" are the two highest processes. What are these for?

Thanks

Sorry for double post!!
but I know what it is...
Your Icon is showing TIME MACHINE is running a back up..
That explains it.

as you can see mine is not running... It is also telling me I need to do a back up.

Eidorian

Mar 2, 2009, 10:43 PM

Sorry for double post!!
but I know what it is...
Your Icon is showing TIME MACHINE is running a back up..
That explains it.

as you can see mine is not running... It is also telling me I need to do a back up.mount_hfs isn't backupd.

aznguyen316

Mar 3, 2009, 12:33 AM

thread jack, but nice to know 70C is still fine, I get nervous when my CPU temps reach 70 so I use SMC fan to full blast lol, like when playing Guild Wars via Crossover or whatever..

illegallydead

Mar 3, 2009, 12:55 AM

thread jack, but nice to know 70C is still fine, I get nervous when my CPU temps reach 70 so I use SMC fan to full blast lol, like when playing Guild Wars via Crossover or whatever..

You don't really NEED to do that. It certainly doesn't hurt, but Apple did put plenty of circuitry to control the fans in there to prevent the CPU from becoming too dangerously hot. Unless there is something horribly wrong with your hardware, you shouldn't have to worry about it EVER getting above ~90ºC, as that is getting to dangerous levels...

Eidorian

Mar 3, 2009, 12:56 AM

I just let Apple's SMC do what its designed and warrantied to do by Apple. :D

aznguyen316

Mar 3, 2009, 01:00 AM

I just let Apple's SMC do what its designed and warrantied to do by Apple. :D

say what? so does SMC do something with warranty

Duch

Mar 3, 2009, 01:00 AM

I am most definitely new to Mac's, but on your top bar, how do you have your temp displayed?

Eidorian

Mar 3, 2009, 01:02 AM

say what? so does SMC do something with warrantySMCFanControl pops a nice message before you run the program the first time about their liability, etc. I don't think Apple would look do kindly on a logic board repair if you happen to be running it.

shady825

Mar 3, 2009, 01:32 AM

I am most definitely new to Mac's, but on your top bar, how do you have your temp displayed?

I'd like to have my temp up there also for quick viewing.. How do I do it?

Name101

Mar 3, 2009, 05:04 AM

I am most definitely new to Mac's, but on your top bar, how do you have your temp displayed?

http://www.islayer.com/apps/istatmenus/

here is a link.

maclover001

Mar 3, 2009, 09:48 AM

I'd like to have my temp up there also for quick viewing.. How do I do it?

I'm using SMCfancontrol (http://homepage.mac.com/holtmann/eidac/software/smcfancontrol2/index.html).

ppc750fx

Mar 3, 2009, 09:51 AM

I've heard 110º C for mobile components and a few GPUs. Yes, there are runaway processes in this case though.

The maximum operating temp for the C2D chips is 105º C according to Intel. For the Core Duos it's 100º C. I *think* that the board will halt the CPU if it hits 5º C below the max, but I'm not sure about that.

fibrizo

Mar 3, 2009, 02:19 PM

I've noticed that the fan's in the aluminum macbook don't spin up really till about 90C... then hold the temp around 80C (under full stress testing in windows)

alphaod

Mar 3, 2009, 03:01 PM

say what? so does SMC do something with warranty

To be warrantied by something means to be guaranteed to do something; doesn't have to mean the legal entity.

ppc750fx

Mar 3, 2009, 05:15 PM

I've noticed that the fan's in the aluminum macbook don't spin up really till about 90C... then hold the temp around 80C (under full stress testing in windows)

Not having one I can't comment. I can, however, say that the operation of the fans under Windows and Mac OS X may well be different -- I'm pretty sure they're different on the pre-unibody MacBooks.

I'd find it kinda strange if the default acceleration curve kept the fans off until 90C -- I can't imagine that's good for the lifespan of the components...

Eidorian

Mar 3, 2009, 06:36 PM

I've noticed that the fan's in the aluminum macbook don't spin up really till about 90C... then hold the temp around 80C (under full stress testing in windows)The fans spin up just shy of 100 C over on OS X and proceed to cool the laptop until it hits ~85 C.