MacBook Pro's fans start running at high speed when the computer is asleep. Normal?

The other night, my MacBook Pro's fans started running at high speed when the computer was asleep. Loud enough to wake me up. And this just kept on going until I finally decided to turn the computer off. Is this normal? Is this anything to worry about?

This is not normal. See if a SMC reset solves the problem:
http://support.apple.com/kb/ht3964
Ciao.

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I have a dual 1.8 ghz pwer pc g5 and sometimes i put it in sleep mode and come home on my lunch break and the fan is running at full speed and the computer has frozen up...what is going on here?

and sometimes i put it in sleep mode and come home on my lunch break and the fan is running at full speed and the computer has frozen up...what is going on here? is it a virus or has my computer been hijacked? it cant be good for the computer...anyone ever had this problem..?

Your problem has been reported many times, but causes are as varied as individuals.
Can we assume that a hard shutdown allows a normal restart?
Can I assume that you have used Disk Utility from your OS X install disc to repair the hard drive directory? The freezes and hard shutdowns require that the drive be repaired (not permissions) or soon the machine won't boot at all.
If the root issue is software related, in Console (the application) under Logs, there should be loggings around the time of sleep and logs that tell you what process went wild and froze the machine.
Network activity is also a common casue.
Other info:
http://support.apple.com/kb/ht1776
If hardware related, such as an external drive, other USB device (Wacom tablet) or USB PCI card, ejecting, disconnecting, removing, or in the case of the Wacom, updating drivers, are all potential remedies.

One of my MacBook Pro's fans is running at full speed

Out of the blue today, my 2011 MacBook Pro started fans went mental when I awoke if from it's sleep. They started running at full speed, far louder than I've ever heard them before. I searched through other discussions and it suggested I try an SMC reset. I performed one of these with no success.
I then opened smcFanControl and noticed that my leftside fan was running at 7000rpm+ and the rightside fan was running at normal speed 2000rpm. It randomly spools on and off high speed and I cannot find any fixes or similar problems online. Can anyone suggest a fix for this or should I be taking it to a repairer?
FYI my logic board was only replaced in April under warranty so could it be faulty?

Hi andyBall_uk
SMC fan control measures temp also. Currently running at 47*C as you can see in the screenshot below. I tried overriding the fan speeds...works for the right fan but not the left one so it appears only the left fan has the fault.
The weird thing is, when you press your finger down anywhere on the left speaker next to the built-in keyboard, the fan slows back down to normal speed, but when you let go it speeds back up again. I might open it up in the morning to see if any of the connections are loose, because it seems weird that this happens with a small amount of pressure applied to the body. Also of you tilt the macbook it sometimes slows back down to normal speed (but sometimes stays at high speed). I will let you know how I go. Thanks for your suggestion/s

After Mountain Lion install, my MacBook Pro's fan is running non-stop.

After Mountain Lion install, my MacBook Pro's fan is running non-stop and you can hear the insides working extra hard. Is this normal? It's very loud and annoying?

http://support.apple.com/kb/HT3964?viewlocale=en_US

HT1379 Guys please help? My MacBook Pro won't start up. I have tried the resetting Mac's PRAM and NVRAM procedure with no success. All I see is just the black or grey screen although I hear the drive running.

Guys please help? My MacBook Pro won't start up. I have tried the resetting Mac's PRAM and NVRAM procedure with no success. All I see is just the black or grey screen although I hear the drive running.

Hold shift key down while booting should get you in
go through this list and get back with me
Step by Step to fix your Mac

My MacBook pro won't start. It is frozen on the gray screen with the apple. Please help?

My MacBook pro won't start. It's stuck on the gray screen with the apple logo.

Reinstall OS X:
Reinstall Snow Leopard without erasing the drive
Do the following:
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.
Reinstalling Lion Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Continue button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer.

Fans still running at high speed after smc reset

I have an i Mac Version 10.6.7, 4 GB RAM and 2.66 GHz Intel Core i 5 and since yesterday the fans are running at high speed. I tried to reset the SMC as instructed on Apple Support Site but it won't help.
Does anyone have an idea?
Thanks.

Try the reset again. Sometimes it takes several. This time leave it off wall power for an hour before holding in the power button.
If that doesn't help, run the Hardware Test in Extended.
http://support.apple.com/kb/ht1509

My fan(Left only) is running at high speed all the time since last update. Any ideas? (Mac OSX version 10.7.5 on 27" mid 2011)

My left side fan is running at full speed all the time. I have downloaded free fan speed control app but does not help. Any advise

Fan Control Apps/Utilities generally can only raise the speed of the fans and not lower them.
Disable, turn off or uninstall whatever Fan Control that you installed and reset the SMC.
see > Intel-based Macs: Resetting the System Management Controller (SMC)
1. Shut down the computer.
2. Unplug the computer's power cord.
3. Wait fifteen seconds.
4. Attach the computer's power cord.
5. Wait five seconds, then press the power button to turn on the computer.
Then if the iMac's fan is still running fast, you probably have a loose sensor cable or bad thermal sensor and the iMac needs to be taken into service
see > Apple - Support - iMac - Service FAQ

Often I will leave my office and return to find the fan running at max speed and the computer is unresponsive

I also have a MacPro3,1 (2009) I believe and just started experiencing similar issues as described here.
I have scheduled sleep and start cycles and often I will leave my office and return to find the fan running at max speed and the computer is unresponsive or I find the computer booted in to disk utility mode.
I also often loose ethernet connectivity and have to try renewing DHCP lease several times before it will finally work.
Has anyone found solutions for this. I have looked at the console errors right before shutdown and don't really see anything fishy. Here are the last couple of lines before it looks like it shutdown.
12/4/14 10:08:37.447 PM xpcproxy[5066]: assertion failed: 13F34: xpcproxy + 3438 [D559FC96-E6B1-363A-B850-C7AC9734F210]: 0x2
12/4/14 10:08:58.145 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:08:58.193 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:08:58.235 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:08:58.269 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:08:58.301 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:08:58.662 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:09:57.998 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:09:58.142 PM mds[38]: (Normal) ImportServer: Ignoring blacklisted Spotlight importer plugin:/Developer/Applications/Xcode.app/Contents/Library/Spotlight/SourceCode. mdimporter uuid:548A3091-3C5D-498A-A329-B532A6C896BB version:1085
12/4/14 10:10:30.000 PM kernel[0]: PM notification timeout (pid 1514, Messages)
12/4/14 10:10:31.129 PM mDNSResponder[39]: DHCPWakeTime: SCDynamicStoreCopyDHCPInfo index 0 failed CFDateRef start 0000000000000000 CFDataRef lease 0000000000000000 CFDataGetLength(lease) 0
Any help would be greatly appreciated.
<Re-Titled By Host>

Mac Pro early 2009 is Mac Pro4,1, anyway, I think you need to boot into recovery mode, launch Disk Utility, then select startup volume and run repair disk.
Xcode is the latest one, by the way?

My 1-year old MacBook Pro Retina shuts itself without giving a warning when the battery is at 5-15% of capacity. Idk what to do about it.

My 1-year old MacBook Pro Retina shuts itself without giving a warning when the battery is at 5-15% of capacity. Idk what to do about it.

KarnPS,
start recharging your battery when it gets down to 20% — you’ll shorten your battery’s lifespan by running on battery power beyond that.

My macbook pro shuts down OSX and all my programs when the lid is closed

Hi,
I am having a problem. My macbook pro shuts down OSX and all my programs when the lid is closed. I close the lid, and then I hear the shutdown music and then when I open it again it automatically restarts OSX and all my windows and programs are closed, any info gone.
This doesn't happen all the time. Just once a day or maybe twice a day. It seems like it happens basically when I have my computer just the way I want it, to keep an eye on things for the day.
I just recently switched to a mac and while somewhat savvy, I am not a programmer or techie, but it seems to me that when I shut the lid, it should do the same thing every time.
I have a intel core 2 duo 17 inch macbook pro with 2.33 processr and 2 gig ram, if that helps.
I am in alaska and there is no genius bar here and I am hoping to figure this out before I begin bugging our local independant mac store about this.
Thanks in advance,
Lylah
17 inch Macbook Pro Mac OS X (10.4.9) intel core 2 duo 2.33g. 2 gig ram

Ahhh, enlightenment!
That would make sense. What I usually do, after closing the lid, is to wait for the apple to turn off and then set it down on it's side leaning it against the side table. I will try to wait for it to indicate that it is fully asleep before I move it next time. Personally, I prefer my computer to NOT fall asleep at all, but I am told it is not an option. Apparently this function is hardware related accoring to my local mac shop. They tracked it down for me because I hated this feature when I first bought my computer and was trying some way around it.
The shutdown music I was refering to was that music the mac makes when shutting down, which doesnt usually occur when it goes to sleep, unless it is malfunctioning like this.
What does resetting the pmu do? (what is a pmu as well?)
Thank you very much.
Lylah

I'm wondering if anyone else has had problems with their imac fans being extremely loud when running at slow speeds? When the computer heats up enough for the fans to run at higher speeds they quiet down. New HD fan was just installed.

I have an imac that I've had for a couple years. The fans have always been loud when running at the slower speeds. When the computer heats up enough for the fans to run at a higher speed the fans quiet down. I had installed SMC fan control after multiple attempts with Apple to get the fan issue resolved. That seemed to keep the fans quiet enough. I've never had a problem with overheating. Recently the fans were becoming loud again even running at the slightly higher speeds so I took it to my local Apple store and they replaced the hard drive fan. I got it back and it's now as loud or louder than ever!! And, now SMC fan control won't "stick." The fans will speed up, but then gradually go back to the lower "loud" levels. I'm at a loss as to what to do next.

Thanks jared,
I'm still dealing with this issue through Apple. Some time after I posted this, I contacted Apple again. They did start a case up for me, as I was experiencing the same behavior on two different machines, with two different versions of Windows.
So far it remains unsolved. I've logged iClouds for Windows on my desktop, which is brand new, then logged for awhile after completely uninstalling Norton Security Suite, depending on the Microsoft security for some time, and finally logged after I uninstalled iCloud for Windows, restarted, installed a clean download, and connected using a completely different test account, which Apple set up for me. None of this made any difference. Looking at the logs, it seems every 10 minutes, iCloudServices.exe creates a new TCP connection to confirm I'm using less than 5GB on iCloud, (which I am by a good margin, using less than 2GB), it seems this connection is not closed, and when the next iteration rolls around 10 minutes later, a new TCP connection is created. I come very close to having 6 TCP connections created per hour, until I restart my computer. This works out to... 6 x 24 = 144/day.
Perhaps the article you posted will shed some further light on this. I'm thinking seeing the state of the connection through netstats, at the least, could help.
For the last week, I've been putting a hold on further logging, as Apple wants me to create a new user account on one of my computers, install iCloud for Windows there, and log it running in the other account. This however basically means I cannot use my computer for a fair number of hours, and I've been busy enough with work the past week that I haven't the time or energy to afford to set this up and run it. I've had need of my computers too much for the past week.

Hello, I am interested in buying a new Macbook Pro but want to run Adobe CS package. Which computer do you recommend?

Hello, I am interested in buying a new Macbook Pro but want to run the latest Adobe CS package. Which computer do you recommend for best speed and perfromance?

Depending on the software you'll use - I doubt you'll be an expert on After Effects and use Photoshop, Illustrator and Dreamweaver like a pro (you may be an exception) - I have a 13" Macbook Pro simply because the 15" lacks the portability of the smaller size - the Retina 15" is alot lighter and if you can afford it - go for it!
I bought the Macbook Pro and replaced the 4GB of RAM with 8GB of RAM and replaced the HDD with an m4 SSD from Crucial. The SSD really makes a difference in app start up speeds, loading times and bootup speeds. The RAM ensures apps operate smoothly and everything is snappy. Since getting an SSD, I would say the performance of Photoshop and Illustrator is vastly improved. I can have both open whilst surfing the web, checking my email and even using Dreamweaver every once in a while. Multitasking is great.
To conclude, depedning on your price range, buying a £999 Macbook Pro and swapping the HDD for an SSD and the 4GB of RAm to 8GB, will ensure better performance than both 15" Models. However, buying a 15" Model and maxing out the specs, would beat the performance of a maxed out 13".
I have a 13" and it runs faster than it was when I first purchased it last year. Photoshop opens in 2/3 seconds and performance is great.
Hope this helps.
P.S. If you have the money, get the 15" Retina. If not, max out the 13" if you still want portability. Otherwise, get the 15" and max that out if you feel performance is poor.
The reason I say Retina, is because the maxed ram and SSD is already installed and saves alot of hassle aswell as the slimmer design and lighter weight.

Macbook Pro 2011 Fan cannot run higher than 1000 rpm

My MBP fan is making loud noises like something is jamming it so it has to work harder than usual to spin. Right now it is running at about 900 rpm according to smcFanControl. My temperature is ~60ºC (not sure if this relevant).
I have tried taking off the back cover and cleaning the dust off the fan with compressed air. This significantly lowered my temperature from ~70 ºC to ~50 ºC.
If more information is needed, please specify what and instruct me how to find them.

You don't mention which MacBook Pro you have, but in any case, if you look at the instructions for opening the system to replace the HDD/SSD then you should be able to see the cooling fans. Take a look and make sure they don't have a large dust build-up, and possibly even use a can of compressed air to clean them out a bit. I know that I need to do that with my system a couple times a year due to dog hair & dust build-up, but my fans never get as bad as yours seem.
If you are still under Apple Care, you might want to make an appointment at a Genius Bar and have them take a look at the system. If it is a bad fan, and you are still under Apple Care, they will fix/replace it for free.

Macbook Pro 2011 just started running extremely slow

After recent OS upgrades and general teenager use, the MacBook Pro all the sudden is running extremely slow. I am not a really technical person, what should I do to fix? I will start backing up now.
Thank you
Matt

You may be able to improve the speed with some software work but it could also be your disk or SSD is corrupt or failing.
Try resetting PRAM and SMC:
http://support.apple.com/kb/PH4405
http://support.apple.com/kb/HT3964
Is it faster now? If not, proceed.
Restart in Safe Mode:
http://support.apple.com/kb/HT1564?viewlocale=en_US
If it boots faster then uninstall all unnecessary login items >User&Groups>Login items. Unlock the padlock. Remove them with the minus -
Also uninstall internet plug-ins in your browsers.
Is it faster now? If not, proceed.
Backup your data immediately:
Before proceeding you should make sure you have a current backup. If it has been getting slower over time your disk could be a failing slowly. SATA drives have two retry modes: short and long. They can continue operating as read errors are increasing. The long retry cycle is very long and can cause significant performance degradation. If it has started long retries then it is likely to get worse and eventually fail. SSDs also have a failure mode where the fail slowly.
Time Machine Basics: http://support.apple.com/kb/ht1427
Most commonly used backup methods:
https://discussions.apple.com/docs/DOC-3045
Methodology to protect your data. Backups vs. Archives. Long-term data protection:
https://discussions.apple.com/docs/DOC-6031
Spotlight: If Spotlight is continually running, re-index Spotlight:
http://support.apple.com/kb/ht2409
Low disk space:
If your disk has less than 10% free space or less than 15 GB free it can slow down your Mac. For information on how to clear disk space see https://discussions.apple.com/thread/5634300?tstart=30 .
Disk Diagnosis and Repair; Runaway Processes:
See Kappy’s suggestions "Things You Can Do To Resolve Slow Downs” at https://discussions.apple.com/thread/5635990?tstart=0
- Directions on how to detect a failing drive
- How to repair a filesystem on a working drive.
- How to check for runaway processes hogging the processor time.
Additional suggestions in "Why is my computer slow?” are particularly good.
https://discussions.apple.com/docs/DOC-3521
In the "Something is wrong with your machine” section.
- Corrupted Caches
Using Onyx to clear the caches.
- Step by Step to Fix your Mac:
https://discussions.apple.com/docs/DOC-3353
(I learned a lot reading this document. Good stuff.)
- A clean install.
After you have backed up your system twice.
Preferably with one of the backups being a clone.
Time Machine restores are complex and can sometimes fail.
You don’t want to risk all your data on one backup as you wipe out the data on your Mac.
As part of this clean install procedure erase the disk with Security Option Zero
that writes zeros to all sectors and remaps bad sectors as it does so.
That is a time consuming operation, but worth it.
See https://discussions.apple.com/message/24057867#24057867
Additional suggestions:
http://www.macworld.com/article/2026650/mac-troubleshooting-what-to-do-when-your -computer-is-too-slow.html
and Mac Performance Guide: http://www.thesafemac.com/mpg/
Hardware replacement or upgrade?
Hopefully by now your Mac is back to its normal speed. If a hardware repair is indicated take it to an Genius bar at an Apple store for a free diagnosis and estimate of repairs. If it is under warranty or AppleCare they will repair it for free. If not, you can compare their estimate with DIY repairs.
Genius reservation http://www.apple.com/retail/geniusbar/ .
or find an Apple Authorized Service Provider https://locate.apple.com/country
You can speed it up further by upgrading some hardware. (Do not upgrade the hardware if it is still covered by the warranty or AppleCare.) For the following memory, disk or SSD replacements and upgrades check out OWC http://eshop.macsales.com/, Crucial: http://www.crucial.com/ and Kingston http://www.kingston.com/us/. You will need to know your Mac the year and season your Mac was first sold and model number which can be found here:
 > About This Mac > More Info… > System Report > Model Identifier:
If your Mac has 2 or 4 GB of RAM, consider an upgrade to 8 GB (if the memory is upgradeable). An 8 GB memory upgrade is only $100. When I upgraded a MacBook from 2 GB o 8 GB it booted thee times faster.
If your Mac has a disk and it won’t repair properly, is low on disk space, or you just want a considerably faster disk, check out an upgrade to an SSD-Hybrid disk. Google "Seagate 1TB Solid State Hybrid Drive SATA 6Gbps 64MB Cache 2.5-Inch" or consider an SSD (120 to 480 GB).
OWC has SSD replacements and upgrades for MacBook Airs and Retina MacBook Pros.
Good luck. May the software fixes do the trick.

MacBook Pro's fans start running at high speed when the computer is asleep. Normal?

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