Does the fan run in sleep mode

hi guys do you know if the fan still runs in sleep mode?

If the power light is steady, rather than slowly pulsing, only your display is asleep. If you put your Mac to sleep (slowly pulsing power light) and the fans continued to run, the display and hard drive went to sleep when your Mac entered the "doze" mode of sleep, but the power supply and fans were still on and the processor was either running or idling. Once "full" sleep occurs, the main power supply is shut down, but there is a trickle supply that gives the computer the ability to restart without rebooting.

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Why does the fan run for long periods on macbook pro

why does the fan run for long periods on macbook pro?

to keep the internal components of you mac at a safe operating temperature.

Mbp pro retina 13" after installing mavericks keeps fans running in sleep mode.

Hi. my Mbp pro 13" retina keeps fans running in sleep mode, tried to reset smc but not helping. So maybe someone have some solutions?

Information.
Fans – Monitor Computer Temperature – iStat Pro (widget)
Fans – Operating Temperature

Why does the fan run and the bottom of the computer get very hot?

The computer didn't used to do this (it is only about 15 months old). Lately the fan will run and the computer will get hot on the bottom of the case. Any suggestions as to cause and what I should do about it?

Read through this:
http://support.apple.com/kb/TS1473

When does the ipod go in sleep mode?

What causes it to go into sleep mode?

Time since last action on the iPod. Set the time amount (or Never) at Settings > General > Auto-lock.

My dropped Macbook plays a five note song three times and on the third time, the last note drops in pitch like it is dying. I have not shut it off, but it does this coming out of sleep mode. Can't find any references to this. Anyone know what's happening?

My dropped Macbook plays a five note song three times and on the third time, the last note drops in pitch like it is dying. I have not shut it off, but it does this coming out of sleep mode. Can't find any references to this. Anyone know what's happening?

carolinechx wrote:
i know the description may be a little bit too confusing
Mostly because you are not using any capital letters or paragraph returns and your post is difficult to read.

Whenever I close my laptop then open it it does not turn back on, the screen stays off but I will hear the fan running. I then have to physically press the power button for it to turn on. Help!

Whenever I close my laptop then open it it does not turn back on, the screen stays off but I will hear the fan running. I then have to physically press the power button for it to turn on. Help!

Try here. iPhone and iPod touch: Frozen and unresponsive

How Much Does The Fan on Your 2.0ghz T30 Run?

If you have a T30 with the 2.0ghz processor, I'd appreciate it if you could let me know how often your processor cooling fan runs. Mine seems to run nearly continuously. Does anyone know what temperatures trigger the fan to turn on and to turn off?
I tried Think Pad Fan Controller TPFC). Prior to installing TPFC, the fan ran 5 minutes on, 5 minutes off. After installing then uninstalling TPFC v21 the fan runs nearly continuously. I then installed TPFC v62, but get the same results whenever I let the BIOS control the fan. For example. the CPU is reading 37 degrees C, but the fan is still running. If you do use TPFC with a T30 laptop, and you are happy with it, please pass along the setting you use.
But in any event, I'd like to know what temparature settings turn the fan on and off in a 2.0ghz t30. The specific model is 266-KU1.
Thanks in adavnce fo the info.

A couple of thoughts to consider here:
a) TPFC 0.62 is really not meant to be used on machines as old as T30. I use 0.25 and 0.33 on older P4M ThinkPads and it seems to work pretty well.
b) Do you have the latest BIOS and EC?
c) How many processes do you have running on a freshly booted XP?
Good luck and let us know.
Cheers,
George
In daily use: R60F, R500F, T61, T410
Collecting dust: T60
Enjoying retirement: A31p, T42p,
Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W
Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.

Does the fan on Macbooks with Nvidia Geforce graphic cards run less often?

I have a Macbook Core Du0 1.83ghz running 10.6.3. Each time I watch a video on youtube or watching Flash or other multimedia animations, my fan run super fast.
Is it the same with the new Macbook with the Nvidia Geforce graphic card?
Does the fan on Macbooks with Nvidia Geforce graphic cards run less often?

Watching videos taxes the GPU and CPU. That's why the fan runs faster - to cool the computer. When you aren't doing much the fan slows down. This is true of all the laptops regardless of which GPU is involved.
Since you have the first generation MB model, it runs hotter than later models that incorporated some changes to the cooling system making the fan run faster during idle. You can accomplish a similar result using the third-party fan control software, SMCFanControl - VersionTracker or MacUpdate. It can be used to increase the fan's idle speed to 2000 RPM. This won't make the fan run any slower when the computer heats up.

Why does the fan constantly run

my fan on my macbook pro is constantly running today? any answer as to why

Hi Julian,
MBPs run very warm. The fans run to cool the CPU etc. The warmer it gets on the outside, the harder it is to keep the inside cool. There can also be issues causing the MBP to run warmer than usual.

My Powerbook will not power up, but I can hear the fan running...

Please help!! My Powerbook will not power up, but I can hear the fan running when I press the power button to attempt to power it up. I just received a new power adapter because it wasn't working properly and it was doing this before and then it worked for a week and now it will not power up at all. It just starts the fan but nothing else turns on. When I plug the adapter, with the battery still connected, it will look as if it is charging but then the light on the plug turns from green to orange then off and doesn't power up at all. If I take the battery out and plug in the adapter, the light stays on but it does not power up except for the fan noise. Does anyone have any suggestions? I also followed the two articles listed online in regards to resetting the power setting and the command + alt + P + R as well. Nothing works. Thanks in advance.....

Same here. If I start up with the power adapter attached, it starts up fine. If I try to start up from battery only, the fan comes on, the sleep light comes on but nothing else happens. I tried letting it sit that way for about 15 minutes and nothing changed. I tried attaching the power cord while in this mode and nothing changed. I tried the PMU reset a couple of times but nothing helps.
This computer is just over 1 year old and I have not had any problems with the power cord (3rd party), the battery, or any problem like this before. It started after a proper shutdown last night and attempt to start without the power cord this afternoon.
Any answers to this yet? I think I'll call on this and report any success to this discussion.
15" PowerBook G4 Mac OS X (10.4.8) 1 GB DDR2 SDRAM, 100 GB HD

TS1587 I tried everything, except for reinstalling the SO-DIMM memory modules. Still, my iMac will not wake up. Turning it on you can hear the fan run, but the display stays dark. Any ideas what to do? Thanks Maja

My iMac won't start up, or wake from sleep. I've tried everything, except for reinstalling the SO-DIMM memory modules. Still, my iMac will not wake up. Turning it on, you can hear the fan run, but the display stays dark. Any ideas what to do? Thanks!

Mac doesn't boot
Can you hear the fans and hard drive and see the white boot screen? Flashing question mark? The circle just runs and nothing happens? Only black screen and nothing else? These can be very helpful to diagnose the source of the problem. [1]
Flashing question mark [2]: This is usually a sign of a failed hard drive. This indicates that boot up volume can not be found.
Black screen: This is usually a sign of a failed logic board. There is no single reason for this and this may be caused by failed GPU, screen, CPU or RAM.
Circle of death/no circle/blue screen: This is usually a sign of a hard drive failure. This may NOT be a dead hard drive, just broken permissions or something
Gray screen/Apple logo/spinning gear or globe/prohibitory sign/folder with flashing question mark [3]: This could be a sign of faulty hardware but more likely a software issue, i.e. broken permissions, failed software update, etc.
[edit]
What to do
First, hold down the option key (also known as the alt key) just after you've pressed the power button. This should show all the available options to boot from, so if you have Windows installed through Bootcamp or a disk in your SuperDrive, you should be able to see them along with your OS X drive/partition. Select the OS X partition with arrow keys and press enter. Startup key combinations
If that doesn't help continue doing the steps from below:
1. SMC reset [4]. Shut down and unplug all cables including power cord for at least 30 seconds and then plug in power cord and keyboard/mouse.
2. PRAM reset [5]. Hold down option, command, P and R while booting. Start it when you hear the sound and don't let go before it reboots.
3. Safe boot [6]. Hold down shift while booting to boot into safe mode. If this works, open Disk Utility from Utilities and repair your permissions and verify the disk
4. Hardware test [7]. Insert the install disk (disk 1 in Mac which shipped with OS X 10.5.4 or earlier, disk 2 if shipped with OS X 10.5.5 or newer) and hold down "D" before the grey boot screen opens. Follow on screen instructions
5. Boot from install disk. Boot from the disk that came with your Mac. Hold C while booting. Select Disk Utility from top bar and repair permissions and verify the disk. Reboot normally and see if it works now.
6. Boot from another Mac (Firewire target disk mode). Connect the machines with a Firewire cable. Power on your Mac and press T. Select the other Mac's hard drive. Download the current OS X combo update. Run the combo update installer and select the drive that won't boot as the destination.
7. "Repair" OS X. Boot from the install disk as in point 5. and reinstall OS X. This should NOT erase any data, just replaces the system files which may have caused your booting problem. Now install the latest combo update for OS X and repair permissions on your drive with Disk Utility.
7.1. Install OS X into an external hard drive and then boot from it [8] and try to copy your data from the hard drive before proceeding. If you have done a backup recently, you don't have to do this.
8. Restore OS X from Time Machine backup. Boot from the disk that came with your Mac and choose the Time Machine restore option. This step will lose any changes made since your last backup but the system and your data will be put back to exactly as it was on that date.
8.1 Reinstall OS X. Boot from the install disk as in point 5. and select Disk Utility again. Now erase the whole hard drive and install OS X again. If you had a Time Machine backup and step 7 worked you don't have to do this.

Is it a problem if the fans are in "airplane mode" for a long time?

OK, have another quick question about my G5 Quad:
Occasionally (like 2 or 3 times a year), my Quad fans will go into "airplane mode" - I don't know if it's from a failed boot or what (though a hard restart clears the problem), but my question is regarding if it is a problem if it stays in "airplane mode" for a long time. I can't find anyting on the www about this (though LOTS of complaints on the "airplane" problem). I wouldn't "think" that it would be a problem as the fans spinning up are supposed to protect the computer, but I wonder if my assumption is correct.
The reason I ask is because the Quad sits in the basement, and I can't hear it unless I walk down there (which is one reason it's in the basement - heat being the other...). If the computer freezes or fails to reboot, I may not notice it right away (which has happened recently). It could sit with the fans running at max for several hours until I notice it. I hope this isn't a problem.
Thanks again
Richard

Biggest problem is power consumption.
The default action for the fans is high, which is meant to protect the components in the case of freezes, crashes, boot errors, etc.
I hope this isn't a problem.
Only if it becomes a common occurrence.
Then, you need to find the root problem.
Watch the LCS on the Quad. Though possibly less problematic than earlier models with LCS, it does use, nonetheless, a LCS.

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?

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

Does the fan run in sleep mode

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