Strong fan noise while sleeping

Yesterday before going to sleep, I put my imac to sleep and when I woke up today, the fans were going berserk, and the imac was frozen. So I reset from the back. It's the second time it does this.
I reseted the pram, booted in safe mode, repaired permissions and disk and I did the thing where you remove all usb device and unplug the power cord ( don't remember how it's called ).
Imac G5 1.9GHz 1.5Go DDR2 SDRAM Isight
I'm running mac osx 10.5.3
Anyone know whats wrong

Barry is talking about the Hardware Test DVD that comes with the System Install DVD.
Try the following before using the Hardware Test DVD:
http://docs.info.apple.com/article.html?artnum=301733 iMac G5: How to Reset the SMU (iMac G5, the iMac G5 (Ambient Light Sensor), and the iMac G5 (iSight)).
BTW: The iSight models are NOT part of any of Apple's extension repair programs nor are they user repairable (except for RAM installation). If none of the suggestions work, you will need to take your computer to your nearest AASP for a look-see.
Hopefully you have AppleCare.

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Fan noise/overheating issue? I have a late 2008, 15'' MBP and I'm having a lot of fan noise while just running safari. I don't think this is normal but perhaps it is? Thanks for any and all help!

Fan noise/overheating issue? I have a late 2008, 15'' MBP and I'm having a lot of fan noise while just running safari. I don't think this is normal but perhaps it is? Thanks for any and all help!

Runaway applications can increase fan activity

My MacBook Pro fan runs while sleeping

My MacBook Pro fan runs constantly, even while sleeping.
The problem started about 2-3 months ago, but was pretty rare. When I noticed the problem, I would restart the computer and it would stop for 1-2 weeks. More recently it has become more constant, and now it always has the fan running when it's sleeping.
Any ideas on what I should do? Thanks!

Mine too. If you're worried you might like to try a laptop cooler like one of these:
http://www.amazon.co.uk/s/ref=sr_kk_2?rh=i%3Aaps%2Ck%3Alaptop+cooling+pad&keywor ds=laptop+cooling+pad&ie=UTF8&qid=1344763538
Not sure how well they'd work on a Macbook as there aren't any vents on the underside but it couldn't hurt and they're quite cheep.

Short burst of fan noises after sleep?

Does anyone else experience this and is it normal?
I have a brand new Dual 3GHz Mac Pro. When I wake it from sleep (after a few seconds or a few hours, makes no difference), there is a sudden short (about 1 to 2 seconds) burst of fan noise, kind of like a short rev, then when monitor kicks in computer goes to almost silent again, part from a slight hum.
Does this sound normal, can Mac Pro users quickly sleep and then unsleep your computer and tell me if you expreience this?

The fans are controlled by routines in the operating system that monitor all the temperature sensors. These routines also send periodic signals to the control circuitry saying everything is under control. In the absence of these periodic signals (e.g. the temperature routines aren't running yet because the boot procedure isn't complete, or the system has frozen), the circuitry switches all the fans to full speed, to be on the safe side, and prevent overheating. This will happen when power it turned on, or the system has just woken up. It may also happen when running hardware tests, when certain parts must be tested at full speed without interruption.

Loud fan noise while gaming on GT70 gaming laptop

I've loved my laptop ever since I bought it but there seems to be one problem with the fan possibly.
The fan noise is really audible and it gets annoying when I'm gaming. Games like Fable Anniversary (highest setting) forces the fan to be turned on and make loud noises that even wearing a headset wouldn't help avoid. You know how new MSI laptops have a button for turning on cooler boost 2? It feels like it gets turned on by itself while playing some, if not most games.
I would first like to know if this is normal for a gaming laptop. Its REALLY annoying, I even tried the GT70 Fan control 1.63 but the fan keeps turning on by itself. I understand that the GTX 870m gets heated fast and therefore needs to cool off, but like on almost every game.....Skyrim, Tera (not even that demanding.....and not even on max setting ....) long hours of playing league of legends, The Last Remant..etc. I wanna play without such loud fan noises I don't mind if its audible but not too loud, I can even hear the fan noise from upstairs if I leave my room door opened. I would really enjoy playing Tera and Archeage without such irritating, loud sound that really distracts me and makes me fear that its abnormal. Hell, even Rift (MMORPG) released in 2011, would turn on turbo fan.... =(. Any help is greatly appreciated.
Specs:
Name: GT70 2PC Dominator
Intel Core i7-4810MQ
GTX 870m
8gb RAM
1TB 7200 RPM

Quote from: chc on 26-May-15, 11:33:52
There isn't much you can do with the tool but better than nothing.
It didn't fix the fan problem =/
I'm not the only one with such problem, https://forum-en.msi.com/index.php?topic=256673.0 look at the 2nd video and just listen to how loud the fan noise is. (Yes different models but same crap)
The silent option doesn't fully stop/slowdown the fan, maybe just momentarily then once you open up the game, the fan goes back to its usual 3k RPM. Is there ANY way to stop this? its been happening ever since I bought it and it really makes me not wanna play simply because of the noise that is audible even through wearing a headset. Let alone not wearing a headset....
Sad it happens even when playing fifa 15. I mean is fifa 15 even THAT demanding? the answer is no, not even close to demanding as its using the same engine as 13, 14 ..etc. Also, I played it on my old lenovo laptop that had WAY lower specs such as gt 650m graphics card and yet the fan was extremely quiet, and I might add it was on highest setting....
I understand that the gpu can get heated fast, but on almost EVERY game? at first I thought the fan will only make such noises when playing highly demanding games such as Skyrim. A game from 4 years ago without any frkin mods. or Fable Anniversary..OR Prison Break: Conspiracy (what the f?) but it turns out that the fan will go turbo mode on literally every game. so in conclusion, every game is suddenly demanding thus the Cooler Booster 2 will automatically turn on.

MacBook Air 2.0 Fan Noise While Idling

I picked up a 1.86, 128 SSD MacBook Air last Sunday and have run into an issue with the fan. At first, the computer was near silent as I've experienced with every Apple laptop I've used. However, while reinstalling OS X to trim the printer drivers and language translations the fans kicked on to full bore. After restoring my system with Time Machine, the fans now make a rattling/vibrating noise from the time I start the machine, or wake from sleep.
Since I didn't notice this at first, I'm guessing that I am experiencing an unfortunate defect with my machine. I was hoping to gauge those of you who have purchased this machine to see if this was an isolated case or if this is normal for the Air.
Also, the noise is not extremely loud, and isn't noticeable with a bit of ambient noise in the room like the TV or music. When it is just me and the computer it is quite distracting. Thanks for the help.

unfortunately that's not a desired solution since I already own a MB Pro. The MBA should be the light OS X laptop to carry around. That's why we cope with the little number of ports and even with a battery that cannot be changed by own means.
Because of the poor graphics and the related processor work producing loud fan sounds by just watching a you tube video / a flash site or doing any other not really power intense stuff I sold my MBA rev1 and bought a rev2 to overcome the graphic card bottleneck and overcome this problem.
And that's where we are right know ... stuck with a better machine in terms of power but not in terms of the display.. left alone by Apple so far in the middle of nowhere with this issue so far. I even can't go to an Apple store and ask them to open any MBA and give me one with a perfect display. We ain't got an Apple store so far in Germany. It's thrid party electronics stores selling those products over here and they actually deny opening the devices before being sold and handing me over a perfect one. Despite of that I have to buy it and afterwards return it for "repair". That's "real customer service" with greated satisfaction. So the only way for me is to gamble and to order directly from Apple Store online and return it if it's not a perfect one. It did this twice but due to the forums experience and due to my personal experience I went for a refund after the second rev2 and now are waiting for a couple of weeks until I will give it a try again. But as long as Apple does not officially react I doubt much will change.
However compared to the number of posters and the sold devices the percentage of complaining users is so low (0.000.x %) Apple probably does not see a reason yet to react. The only thing that keeps me from thinking that it's minority problem is that so many people are reporting that so many MBA rev2 in Apple Store would show the problem to and that even the store genius and stuff admit the devices to have this "faulty" screen. That's my only hope in terms that maybe something in the future will change and that maybe there comes a day (hopefully in the near future) where I can go and buy and get a perfect MBA rev2 and thus an Apple Laptop that I can use what it was designed to be an "almost" perfect lightway OS X device.

MacBookAir Fan noise while WATCHING VIDEO (youtube, avi etc)

Hi guys!
My notebook fan goes crazy - makes a great noise only when streaming videos, no matter what quality or what source. Or when videoskyping
As today online streaming is a daily routine i find it strange that my macbook cannot cope with it. Fans go crazy but the performance doesn't slow down.
Using Safari or Firefox
streaming: youtube, iplayer, ov, ......
I could do with some help here since the sound is unbearable and disturbing.
Thanks!!

Hi There!
i got the same problem and solved it, hopefully...
open the activity monitor.
sort the colums for %CPU.
in my case i found an activity called "empdaemon" running at 80%-90% while playing a video at vimeo.
it belongs to the elmedia player, which i don't need, so i quit the process and uninstalled the elmedia software.
all quiet again
i guess that solved the problem for me.
the cpu usage fpr the flash-plugin runs at 50%, which is normal i guess.
cheers
stoffl

Fan noise while plugged in only

hello, i got a dv7 4190us and the times i try to play any game when the laptop is plugged in, the fan start to make noise, temps hit 85C, this dont happen when i play with the battery
is it a cpu stress problem? i tried some benchs with battery and AC, cpu hits 75C with battery and 83-85C with the AC adapter
i wonder if is a fan problem which can be solved with bios update, but there is no longer bios update in the hp support page (F.23 only, rare thing there was F.27 in april but isnt there anymore), doubt it is a dust problem, i have the vents cleaned

Have you tried using a cooler pad under the lap top? To help cool down your lap-top while playing games. Yes as the computer gets hot the fans turn on. When it is plug in fans can draw more electricity than on battery power making them spin faster. I bought a real cheap fan set at Rite Aid $8.00 that lap top sits on and the HP DV7 6135dx and it folds up and fits in pocket in lap top case. Lap top no longer gets hot. You can purchased more expensive cooling pads at the computer store. No problem with your computer. The computer will shut down automatically if it starts to over heat. HP Support Assistant now up dates the computer for Hp Software stuff.

Fan starts while sleeping - also wakes itself up sometimes.

I've got a Mac Pro 2.66 ghz with 16 gigs of ram. I'm running 10.6.8.
The computer is doing 2 strange things:
1. Every few hours, while asleep, the fan starts up for about 5 seconds - even though the computer is cool.
2. Every now and then it wakes itself up.
I've ignored this problem for a long time but now I'm going to be moving the computer into the bedroom and this is not condusive to sleeping.
Anybody know what's going on and how to fix it?
Thanks.

Neal Fox wrote:
Do you think that's why the fan would start up when it's supposed to be asleep?
It is the simplest explanation but there could be other causes.
Even if there is no device requesting your iMac's attention "wake for network access" will still cause it to wake periodically, just to inform your router that it is still present. It should do this then return to sleep fairly quickly. The display will remain dark.
Whenever you suspect a problem related to fan operation or power, including sleep, an SMC reset is also recommended. It should not be necessary for the fan to run so fast as to be objectionably loud, but some people are lighter sleepers than others. Perform the SMC reset; it may help.

Popping noise while sleeping

I started to notice a "popping" noise (about 1 Hz) when I got external speakers for my Mac Mini. It occurs when the Mac is sleeping and the external screen is on (but sleeping its own "sleep").
If I disconnect the analog audio out (from where the external speakers take their signal) the popping ends.
If I connect headphones to the same jack, I hear no popping in them.
If I hit the power button on the external screen and power it down, the popping ends. It will not return eventhough I power the screen on again.
If I disconnect the USB cable that power the speakers from the Mac, the popping ends, but returns when I connect again.
Any clue to what this problem comes from? Some kind of ground loop?
/BE

Seems we've isolated the problem to Electrical at least. Sounds like a Ground loop somewhere.
See this nice article...
http://www.soundonsound.com/sos/nov04/articles/computerproblems.htm
Audio equipment which uses a double-insulated design needs no earth connection, and so is less susceptible to earth-loop problems. Such equipment will often use two-core mains cable, which has an oval cross-section, and the mains plug will sometimes use a dummy plastic earth pin, as shown here.
Disconnecting the earth wire inside a mains plug might solve an earth loop problem, but it's a dangerous solution, because you're removing an essential electrical safety measure.
And my best guess at this point is the PSU for the Speakers.

Fan noise while import into iPhoto (MBPr late 13)

Hello,
is it normal, that the fan turns on while importing photos (raws) into iPhoto. Recently i read an article/test saying the MBPr stay quite while doing that.
Thank you for your response.

OK.. so its seems that it was incidental about removing the eye tv stick as the problem has returned.
I do believe this time that I have a better understanding of what is going on for me at least.
I installed "temperature monitor" to keep an eye on what was going on. The problem appears to be with the CPU A sensor. I just this moment woke my machine up and shortly afterward the fan started. I looked at the temps and the CPU A sensor read 127 C which was obvious rubbish since it had been asleep in a low ambient room. I suspected a bad reading from a bad connection or sensor so I tapped the machine on the back a few times (not too hard) and the reading returned to 33 C and the fan stopped.
My problem now seems clear (I must have bumped the machine when removing the EYE TV stick the first time leading me down the garden path a bit).. maybe this will help others.

Loud noises while sleeping

sometimes i would close the lid for the night, putting it to sleep, and the middle of the night, i would hear sounds coming from the macbook as it was working intensively, like as if it was running hardcore task. almost the entire notebook would be really hot. i would have to unplug the battery and power to turn it off. this has happened about 2-3 times since i got in June.
could someone please explain to me why this is happening and how i can solve it?
thanks in advance.

There seems to be an issue with this happening. I've had an incident where my MacBook went to sleep on its own, and the fan came on fast and loud.
Temperatures seemed semi-normal. It was just the fan, I think.
There's another thread about this:
http://discussions.apple.com/message.jspa?messageID=4481424#4481424

Lion causes iMac fan noise during sleep mode

Ever since upgrading to Lion, my iMac's (early 2009 model) fan will randomly go into high speed mode (very loud) in the middle of the night when the iMac is in sleep mode. This seems to happen more often if I manually put the iMac into sleep rather than letting it automatically go into sleep mode as defined in the Energy Saver settings.
Anyone else experiencing this? I posted a feedback report (http://www.apple.com/feedback/macosx.html) so I hope Apple can fix this soon.
Eric

Hi Mendl,
Ok, what I discovered after running the AHT test, long version, was that the test doesn't see the actual failure I had in a new iMac. It turned out to be what I suspected all along, which was a defective temperature sensor, or more likely a factory assembly issue on that component.
They replaced my computer and now all is well.
Thanks, for reinforcing my suspicions!
Keep up the good work.
enumscrat

Eject noise while sleeping

Sometimes when my macbook is in sleep mode, it makes the sound of trying to eject a disc, maybe once a minute or something. but there is no disc in the drive. This just started a few days ago. anybody know why?

Hi mallory,
Welcome to macbook forum.
Is that sound comes when the macbook wake up from sleep?
If that so, consider that normal.
But if in sleep mode, the optical sounded continuously yet the macbook still sleep, than it is not a normal behaviour.
Reset your PRAM / PMU to refresh your hardware behaviour.
http://docs.info.apple.com/article.html?artnum=303319
http://docs.info.apple.com/article.html?artnum=88275
Good Luck.

T530: Unbearable fan noise

Probably similar to this thread, the T530 I recently received has fan noise issues. I've invested considerable time in solving this, but found that a solution can be achieved with reasonable effort only by Lenovo:
Introduction:
Most ThinkPad models do not provide the operating system (or the user) the ability to set the fan speed directly (e.g. in rounds per minute) or in a fine-grained way (e.g. as a percentage of maximum speed). Instead, there are "fan speed levels", usually 9 levels (level 0 through level 7 as well as the level "disengaged"). For each level, a particular fan speed is defined and the Embedded Controller tries to achieve this particular fan speed by measuring the fan speed and adjusting the electrical properties of the fan (e.g. voltage or pulse length or something like this).
The fan noise problem:
Every time the internal temperature sensor reaches 50 °C or so, the fan starts with about 1900 rounds/minute and then quickly goes to about 2737 rounds/minute, where it is loud. Then it takes about 20 seconds, the temperature drops to 45 °C, then the fan is switched off. Then, after maybe other 30 seconds, the cycle repeats and the fan is switched on again, ...
There are major problems with this behaviour, because:
The fan is not running continously, but pulsating.
The fan is running at level 1 at a much higher speed than needed, creating unnecessary noise.
I have measured the individual fan speeds for individual fan speed levels:
The fan speeds at different levels are as follows:
Level 0: 0 rounds/minute
Level 1: 2737 rounds/minute
Level 2: 2944 rounds/minute
Level 3: 3033 rounds/minute
Level 4: 3074 rounds/minute
Level 5: 3597 rounds/minute
Level 6: 3773 rounds/minute
Level 7: 3773 rounds/minute
Level disengaged: 4754 rounds/minute
Solution draft:
A minimum solution to the problem above would be introducing another fan speed level between 0 rounds/minute and 2737 rounds/minute, with about 1900 rounds/minute. The reason this makes a difference is that there is a fundamental difference between laminar flow and turbulent flow, where the laminar flow makes nearly no noise and the turbulent flow makes a lot of noise. (Whether an airflow is laminar or turbulent is easiest influencable by affecting its speed.)
As you can see on the observed mapping from fan speed level to fan speed, level 6 and level 7 map to the same speed.
Thus, no particular fan speed would be lost if the mapping would be changed to the following:
Level 0: 0 rounds/minute
Level 1: 1900 rounds/minute
Level 2: 2737 rounds/minute
Level 3: 2944 rounds/minute
Level 4: 3033 rounds/minute
Level 5: 3074 rounds/minute
Level 6: 3597 rounds/minute
Level 7: 3773 rounds/minute
Level disengaged: 4754 rounds/minute
Solution implementation by user is impossible:
The problem, however, is that, while a user can decide which fan speed level should be active at a particular time, the user cannot decide which fan speed should actually be achieved for a particular level. Thus, the user can either decide to have 0 rounds/minute (which is not particularly sustainable, because the equipment becomes hotter and hotter) or to have 2737 rounds/minute (which is not particularly sustainable either, because both the user and other people arund the user's Lenovo computer are distracted from work).
The mapping from fan speed level to fan speed is actually stored in the Embedded Controller Programm ("ECP"). This Embedded Controller Programm is freely changeable or configurable by the user. Only Lenovo has the source code to this Embedded Controller Programm, and actually only Lenovo may know how to disassemble such a binary Embedded Controller Program in case the user wanted to change it. Thus, even advanced users cannot fix this problem by fixing it where it should be fixed.
It should be noted that, because fan speed is a long lasting issue at Lenovo, a third party has been even developed an after-market hardware solution: TPFC. However, this solution probably voids the warranty, and it work arounds the problem at the wrong place, and it costs time and money and effort to actually install it.
Only Lenovo can fix this problem:
How Lenovo should fix the problem
Thus, this is my call to Lenovo to fix this problem (at least for the T530 series, but probably W530, T430 are also affected). Ideally, the solution should be as follows:
Change the Embdedded Controller Program such that the mapping from fan speed level to fan speed is as follows:
Level 0: 0 rounds/minute (no noise level)
Level 1: 1500 rounds/minute (low noise level, sweet spot)
Level 2: 1700 rounds/minute (low noise level, sweet spot)
Level 3: 1900 rounds/minute (low noise level, sweet spot)
Level 4: 2100 rounds/minute (some noise level)
Level 5: 2600 rounds/minute (high noise level)
Level 6: 3100 rounds/minute (high noise level)
Level 7: 3773 rounds/minute (high noise level)
Level disengaged: 4754 rounds/minute (high noise level)
The reasons for this fan speed design are as follows:
The "sweet spot" where both the fan will run most of the time and where the user would not complain is between 1500 rounds/minute and 2100 rounds/minute. If the fan needs to be faster to keep the system cooled, then the user is likely to run the system with considerable load to CPU or GPU. In this case, there is no option to reduce the fan speed, but also in this case, the user probably accepts the fan noise for the computing power delivered.
The "sweet spot" in terms of CPU load is where the users do not accept fan noise while actually generating only minute CPU load (e.g. during web browsing or writing documents, where the CPU and the GPU is mostly idle). For many users, this is their normal working state (e.g. working in a quiet office, a very quiet library, a quiet bedroom, a quiet boardroom, ...). These scenarios are where Lenovo ThinkPads currently fail to deliver, unnecessarily
The "sweet spot" needs higher resolution (more fan levels allocated to these fan speeds), because slightly different load patterns may make it necessary to go from one level to the next higher level, but then the next level still should be bearable. Conversely, the higher levels (e.g. from 2600 rounds/minute on) do not need such a high resolution, because for most of the users, these levels will be only attained rarely anyway, and then they are accepting the noise.
Currently, there is no fan speed level at the sweet spot. With the proposed fix, there would be 3 fan speed levels at the sweet spot, with a neighbouring fan speed level (2100 rounds/minute) still being bearable when considering the performance delivered.
There is no fan speed level below 1500 rounds/minute. This is ok, because the fan is nearly inaudible at this speed anyway, and below a certain speed, there is a risk (depending on the fan) for the fan to actually not rotate at all (e.g. due to friction).
How much time and effort would Lenovo need for fixing the problem:
The Lenovo engineer responsible for the Embedded Controller Program of the T530 should need less than one day to change the source code of the Embedded Controller Program and to recompile it. The engineer may need one additional day to test this program (e.g. for different types of fans), and there may be a need for an additional day to release the update to the BIOS and ECP. All in all, Lenovo should not need more than 3 engineer-days (maybe worth 1800 USD) to fix the problem.
Why Lenovo should fix the problem:
Probably the whole current T series (T530,T520,T430,T420) as well as the current W series (W530,W520) fails the users in any of these scenarios (among others):
User working in a quiet office.
User working in a quiet library.
User working in a quiet bedroom.
User working in a quiet boardroom.
Thus, the Lenovo T series is currently not usable for many business users and almost all students. This problem should cost millions of USD of revenue, while fixing it would cost it maybe 1800 USD.
Incidental remark: Lenovo subsidiary can do better:
Lenovo has bought the majority of the Germany consumer electronics company Medion. Medion currently offers a consumer level notebook "E7222" for 499€ including German VAT. Despite of this low price, this notebook delivers very good fan control (that is: the notebook is nearly silent when the CPU is near-idle). (However, being consumer-grade, it does not offer a docking-station or a FullHD screen or WWAN.)
What will I personally do:
Some weeks ago, I had a powerful W530. I returned it due to fan noise for cash refund. Now I have the T530 (Serial number: R9RRF26) which has exactly the same problem. The deadline until I can legally request a cash refund runs until 2012-09-07. I hereby ask Lenovo:
To fix the problem and release an ECP or BIOS update until 2012-09-06 (it is doable, see above) or
if the problem cannot be fixed in this time (e.g. due to bureaucracy): provide me with a written statement (e.g. e-mail or forum post is sufficient) that my legal cash refund deadline (German law: §355 BGB) will be voluntarily extended by Lenovo (to some date Lenovo thinks it needs to fix the problem).
If none of the above happens, I will have to return the T530 as well. This is the 2nd chance Lenovo has gotten from me, there will be no 3rd chance. I would have to turn to Fujitsu (they do have business-class machines with big batteries, FullHD, WWAN) and they probably have better fan control.
Solved!
Go to Solution.

kaawee,
Thank you for the considerable thought that you put into your summation / analysis and proposal for a change.
I don't agree that you are wasting your time as we did make EC changes on the X220 and T420s to change fan behavior (along with several other systems). However, not all customers agree that the changes made the system behave the way they wanted and were completely satisfied (hence some of the dissenting opinions expressed here).
We are interested in feedback on T530, W530, T430 fan concerns and we are investigating. It is possible that a future change might be made, but I cannot say for certain that it will, nor can we commit to making this change within 4 days (2 now remaining) from your original posting.
Best regards,
Mark
ThinkPads: S30, T43, X60t, X1, W700ds, IdeaPad Y710, IdeaCentre: A300, IdeaPad K1
Mark Hopkins
Program Manager, Lenovo Social Media (Services)
twitter @lenovoforums
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Strong fan noise while sleeping

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