Fan speed up after 10.4.3 update

Today, I applied the 10.4.3 combo update to my iMac. After reboot, the fan came on full speed, and has stayed there ever since. I tried an archive and install of 10.4, and applied all updates. I also tried reseting PRAM, as well as the Open Firmware resets. No joy. The fan is still full blast. Any ideas or suggestions? I'm stumped.

it's all right here:
http://docs.info.apple.com/article.html?artnum=301733
it says in there that the SMUs control fan speeds. I hope that fixes it for you

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Fans acting up after 2010-01 security update

Hi there,
My MacPro (2,1) 8-core (16Gb) has it's fans acting up after the 2010-01 security update. This update came together with an update for Java. Being aware of the possibility that problems can rise when updating the two at the same time, I ran the security update first, then a restart, checked permissions, a restart and then the Java update and checked permissions again. However, now with only Safari or just the finder running the fans act up after a while. Even with the simplest tasks like opening a folder or dragging something or just running idle. It's not full blast but fast enough to be annoying.
I've done a SMC reset in conjunction with a 15min detachment of all cables, booted a few times in SafeMode, but no result. I hoped the 2010-02 security update would fix it but again no luck. Any ideas?

I've looked in the Activity Monitor (I hardly use it) and it gives me some strange data. Like Airport-BaseStation is running.
I don't have an Airport Base Station either, and Little Snitch is always asking if I want to allow it to phone home. So, mine must be running, at least sometimes, in the background also.
Sorry, don't have a real clue about this, but here's some other stuff to try.
First, see if this fan revving up happens in a new admin account and try a Safe Boot. Hold shift key down at startup chime. It will take some time to boot; let it go, it's doing some checking and repairing. The reboot into normal bootup will be slower than usual also.
if it were happening to me, I'd throw Applejack at it; must be from Single User, which BTW, is generally, a safer way to clear some caches. After it's installed, start up in Single User (CMD-S) and type in applejack and follow the on screen instructions for caches and pref files. Don't run anything out of order. If that doesn't do it, then you could try it in deep cache cleaning mode by typing in applejack AUTO.
You may not see the benefits until after several restarts, and since caches are made to speed things up, you may see some temporary slowness until these are rebuilt. If you run it in "Deep," you'll probably be asked to reauthorize some applications, which now think they're being opened for the first time.
Even if it doesn't help this time, it's a very useful tool to have on hand.
Download
http://applejack.sourceforge.net/
Read
http://reviews.cnet.com/8301-13727_7-10334620-263.html?tag=mfiredir
Message was edited by: WZZZ
Message was edited by: WZZZ

Satellite L750-A218 - Fan run faster after BIOS 3.30 update

Hi,
here is a new issue I am experiencing after the BIOS update.
I feel the internal fans are spinning all the time by placing my hands near the keyboard. Fan speed according to Toshiba software is 50%+ while I am not doing anything. On the other hand, it was at 25% before the update.
Did they update the BIOS to give the laptop more ventilation or something.
This is weird. CPU temp is 45%. I have upgraded from 3.00 to 3.30, for your information. Thanks.
P.S. The fan speed is stuck at 50%+ and wont go lower than that.

Yeah, I figured they updated the fan work.
Though, its really annoying. Why keep the fan at 50% even though the CPU is at 4% and no work is being done. Actually, what I think they did is set the fan speed at 50% minimum. I can feel the vibrations of fans while resting my hands on the rest pad.
This is driving me crazy. That is because I type a lot.
I upgraded the BIOS hoping that I will be able to install HDD Saftey software and that did not work.
Above that, I gained a new problem. The BIOS software did not give me the chance to back the BIOS up.
Totally inefficient, I checked the BIOS updating tutorial and there was this software that offered that.
Though, mine was not like this.
It actually started the flashing automatically. I wonder if someone can feel the fans working like me on other laptops of the same model or family (L750 and L755).

IMac fan speed increased after upgrading hdd.

iMac mid 2010 i3, I replaced stock hdd to a two terabyte western digital caviar green. After replacing the fan speed rapidly increased. I installed smc and still no resolution.

FIXED THE ISSUE.... This took a little time, but it was a simple fix. The LCD sensor that you have to disconnect from before removing the LCD was the issue. After receiving HIGH CPU fan speeds, I began looking at possible issues. First, I had [http://www.macupdate.com/app/mac/12381/temperature-monitor|Temperature Monitor] Installed. I had all my sensors including the ambient air sensor reading. After I upgraded my HD to a SSD I started getting HIGH CPU fan speeds, but the HD and DVD fan speeds were fine. I looked at my Temperature Monitor and I noticed i had several Temperature Monitors not reading including the ambient Air Temperature (bare with me, these are steps to troubleshoot). After reseting the SMC and PRAM, still nothing. I shut down and disassembled my IMAC again. This time after i removed the LCD, I looked at the LCD cable that you must disconnect when removing the LCD and BAM, I saw the issue. The wires that connect to the Motherboard from the LCD Sensor, inherently like to lay across the screw hole the Bezel attaches to. I have a couple of pinched marked that exposed the wires and when I tighten the bezel down, it shorted the wires and caused the issue. I cut small pieces of electrical tape and covered the bare spots. When I reassembled the IMAC, i made sure that all my BEZEL screw holes were completely clear of any wires. Once back together, I plugged in the IMAC, waited 5 Seconds and turned it on. All is well. I feel this a majority of everyones issues when they take apart their IMACS and put them back together. THe Fan Control SOftware is good, but this was my solution that worked. Hope this helps.

Satellite R830-1GZ - CPU usage high ( 25%) and fan speed increase after wakeup

Hello all
The CPU usage of my laptop shoots up to 25% (and beyond) and the fan speed increases dramatically after waking up, but only when I'm using an external mouse (Microsoft Natural Wireless Laser Mouse 6000) - disconnecting the mouse once this has happened does not solve the problem, so I'm always forced to restart my computer if I have let it go to sleep with the mouse connected.
I've noticed that when this happens System Interrupts - Deferred Procedure Calls and Interrupt Service Routines appears in the Resource monitor>CPU>Processes, and seems to explain the increase in CPU usage.
Any ideas on how to fix this would be most appreciated.
I'm using a Toshiba Satellite R830-1GZ with Windows 7 (64 bit). This problem does not happen when I use the same mouse with another laptop (Dell with Windows XP).
Thank you very much.
CM

Thank you for your reply.
I was using the mouse without installing the software that came with it (IntelliPoint), which seems to have been necessary to obtain the latest driver. So I've installed the latest driver now, but... I've still come across the same high CPU usage problem after wakeup.
If your suspicion is correct, should disconnecting the mouse before putting the computer to sleep (hopefully allowing the process that controls the mouse to close properly) stop this problem from occurring when it wakes up?
Could this problem also occur due to an external keyboard? I'm pretty sure it's the mouse (given my experience of using only the external mouse and only the external keyboard) and my understanding is that keyboards don't require special drivers (at least the A4Tech one I have claims it doesn't)... just trying to exclude all possibilities.
Thanks again for your help.

Fans running @ 6k after 10.5.3 update

Does anyone else have this problem? Since installing the 10.5.3 update my fans are constantly running at 6k whether plugged in or running on battery. Does anyone have any suggestions? iStat says it's 73ºC but it doesn't feel hot at all. Strange!!

This is what I worked out...
I was using Fan Control before I upgraded so I uninstalled it by following the instructions here: Fan control then I downloaded an re-installed the app from the same address, and now she's purring again - Woo!

CPU fan speed = overheating. (Fixed)

Well, where to start.
For the past week I've been having problems with my system, turned out it was overheating because the CPU fan speed was very low, once I opened the Core Cell application it speeded up the fan and all is well (but I don't like having to run a bunch of applications to keep the system running the way it should be without. them and these applications don't start in safe mode.) I'm currently using BIOS version 3.30 and read "BIOS reported incorrect CPU temperature." but it does report the correct temperature, it is overheating because of the fan speed.
Does anyone know if updating to the current/latest version (3.60) will correct this problem with the CPU fan speed (it's only been hapenning after I updated to v3.30)
Motherboard: MSI 875P Neo-FISR
Thanks.
Edit: Fixed.

NovJoe,
That is a job by itself!
Everybody has different components on their systems. They buy cheap rams, case with insuficient power supply, lousy cooling, etc. and they are short on money like myself. How can I help them?? My general advise is buy top of the line components or buy a Dell if they don't want to research before they build a system. I know its hard to put out that much cash, I actually got my motherboard from a friend FREE! He had a lot of problems with it. I always had motherboards by Abit or SuperMicro Dual Processor and in the earlier years I had a Sun Microsystem SPARC 10 running Unix. I also get them FREE! They were prototypes before production lots of jumper wires. When I retired at age 47, five years ago I only work part time now when I need spending money like for Christmas and 10 different hobbies that my wife thinks is to much. Yes I wrote CHRISTMAS not Holiday. Grandkids, my wife spoil them all year, but we have to get in the spirit of Christmas she said. AHH HUMBUG! LOL! I need a couple of those new 300 GB SATA Maxtor drives with Command Queuing to get rid of my four 20 GB Maxtor and one 40 GB, I also got them free when I did a job for them 8 years ago and they are still working great. It will reduce my +12V load, increase my storage capacity and my hard disk speed. I had them on a Promise 66 PCI RAID controller card on my old SuperMicro Dual Processor motherboard.
If a person has a problem with a MSI 875P NEO-FIS2R and a decent setup, I will definetly give them advise if I can.

Northbridge fan speed

I just bought a MSI K8N Neo3 nForce 4 mainboard. I have updated the bios to the latest version. Activated cool and quiet, and the smart cpu fan control. When I enter the bios the northbridge fan works at around 7500 rpm! And make so much noise. Can this be correct. Can I somehowe slow it down? It also seem like the cpu fan goes to fast, over 3000, the temperature on the cpu is 30 degrees. It's a AMD semperon 2800+. Somebody help me?

It's been posted many times already.
You could get the zalman fanmate2 to lower the rpm of the NB fan.
It will go as low as 2800rpm,but keeping it around 5400rpm should do the job just fine.
I run it around 5000rpm(jumps up and down between 5000 and 5400) and also I've ordered a replacement fan from msi in the netherlands,it's on the way free of charge.
I did this because now I've greased the standard fan several times already because of the grinding noise it sometimes produces,even at 5400rpm.
Also speed seems to drop down occasionally,so for now I'm fine,but the replacement fan will come in handy since this is leading to a dead end.
This new fan seems to run at approx 5400rpm btw.
Quote
Can I somehowe slow it down? It also seem like the cpu fan goes to fast, over 3000, the temperature on the cpu is 30 degrees.
This seems in order.If you can't lower the cpu fan speed you might need a bios update or cpu driver update.
Or your cpu isn't supported by the cool&quiet chip.

Fans stuck at 1600 RPM after 10.6.2 Update

I have a Mac Pro thats been upgraded from dual 2.0 Ghz Dual-Core Xeons to dual 1.86 Ghz Quad-Core Xeons (Xeon E5320 Overclocked to 2.33 Ghz).
I know there are a few other users out there that have done this mod, and I am wondering if any have experience any fan issues after updating to 10.6.2.
After the 10.6.0 install all is fine. Update to 10.6.2 and all fans but the power supply fan are stuck at 1600 rpms. I can move them higher, but not lower than 1600.

Be sure you've removed all of SMC fan control. Use Easy Find - VersionTracker or MacUpdate - to hunt for any remaining components.
If you are still unsuccessful then in addition to resetting the SMC/PMU try resetting the PRAM as well.
You may eventually need to reinstall SMC fan control in order to reset the fan speeds to normal levels then disable fan control and uninstall it.

Can't control fans speed after upgrading to kernel26 2.6.31 [solved]

Mother board is ASUS P5Q-SE. After upgrading pwm sensors disappeared. I can get temp and fans speed but not set. Any ideas? :-\
Last edited by urandom (2009-10-12 15:52:51)

"This works for me" is a little vague. What worked for me specifically was to start with your link and drill down two levels of links to this webpage, http://hansdegoede.livejournal.com/7932.html, which explained what the problem is and that the workaround is to add acpi_enforce_resources=lax to the kernel command line in /boot/grub/menu.lst.
Someone who understands this issue better than I do should probably amend the appropriate sections of the wiki (lm_sensors, fancontrol, et al).
Jay

CPU always at highest speed after 10.4.8 update

Does anyone else have same kind of "problems" than I have after todays OS X update? Before the update CoreduoTemp showed that CPU speed was moving from 1GHz to maximum 2GHz. Usually it was 1.5GHz and only in hevy load it was maximum.
Now when running 10.4.8 CPU speed is almost always highest 2GHz. It goes to 1.5GHz for couple of seconds and raises again to max. I wouldn't mind about this new feature but this has straight affect to batterylife which isn't great.

Well, I found the parent process and kileld it the 3 processes i saw, 2 of which were childs to sh, was simply coreduo temp calling reading logs to post teh frequency. Killed them, installed the old speedit version and older cdt, and still at 2.0 (though loads are down a bit from the newer version )
so, apprently it wasnt those.
Does anyoen remember hwo to get the CPU frequency from console , i can't recall and would liek to check if cdt is somehow the culprit.
this is kind of annoying, however. my battery is already JUST over 5000 at full charge, 5077 right now :/ i have to go to apple and try to get a new battery since it loses full charge weekly now heh
let's get this oen figured out, guys!

Fan Speed after standby

Hi,
I control the CPU fan speed with the bios-settings (max. temperature 60°C, +- 5°C). This works fine as long as I don't use standby. As soon as the computer resumes from standby, the fan is always running at maximum speed, regardeless of the cpu temperature. The speed control doesn't work any more. Thus I have to use softwaretools (CoreCenter,...) to reduce the speed.
As I don't want to have this annoying piece of software running I am looking for a bios-only solution.
Anyone found a solution for this problem ? Seems to me as if it was a bug in the bios.
Greetings from Vienna,
Markus
Config:
MSI K8N Neo2 Platinum
Athlon 64 3500
Bios v1.5 (same with 1.4)
Sapphire Radeon 9600 graphics adapter, no fan
1 GB memory
1*160 GB Samsung HD
1*120 Seagate HD
1*80 GB Seagate HD
Technisat SkyStar2 sat-receiver card

I have the same problem but the difference is that my fan speeds up the moment i boot my comp. Corecenter doesn't fix this! It displays 6200rpm ! Weird ! Coz the specs of the fan are 5200 if i remeber correctly !
I fix this problem by loading Windows Task Manager (Ctrl+Alt+Delete) and then CoreCenter! The moment that CoreCenter Loads, the fan drops at normal speed and then from the Task Manager i kill CoreCenter and the fan remains at normal speed !
Of course I need a better solution than this, but can't find any ! I haven't updated the bios or any MoBo drivers !

My iphone start having speed, keyboard and wifi issue after ios8.1.3 update

Hi community, i am using i phone 5, i was highly satisfied with that one, With Fast speed and good network and wifi coverage,
never had any issue. since i am using ios7.
But the time since i updated my i phone 5 (16gb / ios7.1.2) to ios8.1.3 i start having issues which are never ending.
* Slow down speed of keyboard and its strucks while typing.
* Using application are not faster than before.
* on ios 7 i was getting 35-45 mbps download and 25-40mbps upload speed, while after updating ios 8.1.3 it became slow to 9.68 downloading speed and uploading is 1.68mbps which became worst.
* i deleted my all data freed my memory 5.5 gb after update still its very slow.
* reset ed multiple time even by iTunes and i cloud, but nothing works
* i backup-ed data on i cloud and while restoring its taking more than 2 days just to restoring my all data.
meanwhile my iphone 5, 16gb is now became bunch of problems
please apple i dont want to loose my device please help me out plz fix these bugs i tried every diagnosis step nothing have been solved.
plz help..............................

Hi community, i am using i phone 5, i was highly satisfied with that one, With Fast speed and good network and wifi coverage,
never had any issue. since i am using ios7.
But the time since i updated my i phone 5 (16gb / ios7.1.2) to ios8.1.3 i start having issues which are never ending.
* Slow down speed of keyboard and its strucks while typing.
* Using application are not faster than before.
* on ios 7 i was getting 35-45 mbps download and 25-40mbps upload speed, while after updating ios 8.1.3 it became slow to 9.68 downloading speed and uploading is 1.68mbps which became worst.
* i deleted my all data freed my memory 5.5 gb after update still its very slow.
* reset ed multiple time even by iTunes and i cloud, but nothing works
* i backup-ed data on i cloud and while restoring its taking more than 2 days just to restoring my all data.
meanwhile my iphone 5, 16gb is now became bunch of problems
please apple i dont want to loose my device please help me out plz fix these bugs i tried every diagnosis step nothing have been solved.
plz help..............................

Imac high fan speed and goes to sleep 10sec after wake-up

Hi,
Since today my imac's fan speed is high (optical fan and cpu fan speed at: 4000rpm)
Done a hardware test wich gives me 4SNS/1/40000001:IDSR-0.000 indicating something with logic board. According to istat all my temperatures are below 35°C (95°F). istat has readings for the cpu and optical drive temp (both around 26°C)
On top of that if I put my imac to sleep after wakeup (give or take) 10sec later it would go to sleep again. tried the smc reset procedure. no success
Any other tricks to try or just go for an exchange? (imac was bought on 2feb2010)

I've had this problem since replacing the MLB in my iMac a few weeks ago. Initially brought in for repair when the CPU fan came on at 4k rpm and stayed on even after SMC reset and nvram reset. First replacement MLB was a dud, second corrected the fan problems. Now I'm having the sleep issue, I can't tie it to any particular process. Initially I thought it was graphics related as it would go to sleep during graphics intensive work, but yesterday it was doing it when just copying data to an external drive. The temperatures of the CPU and the GPU diode are within spec. I now use a fan controller to keep the CPU fan at 2100rpm and the HD fan at 2100rpm and I don't have the problem. From what I can tell now is that a sensor is incorrectly reporting temperatures intermittently. It may not be the MLB or the graphics card specifically, but the cable connecting the sensor to the board. I ran AHT after the last time it did this and it failed a sensor, but after running ASD on the machine it passed all the hardware. I'm bringing it back into my shop later this month and if i can remember i'll post here with the resolution, not much I can do at home beyond software diagnostics.

P67A-G45 Fan Control Problem After BIOS Update

My old BIOS version was 1.8. I could control my fans in BIOS(50-75-100% RPM). Also SpeedFan tool was working perfectly, I could change fan speeds freely.
I just installed MSI Live Update and tool updated my BIOS version to 1.E(CPU-Z says v1.14) without any problem. But when I entered BIOS/Hardware Monitor I saw that fan control is disabled. Both sys fan 1 and sys fan 2 are stuck in %65. SpeedFan doesn't working too.
CPU Smart Fan is okay, works fine but system fans are uncontrollable now.
My Hardware;
i5 2500k
MSI P67A-G45
G-Skill 1333MHz 2x2GB DDR3
Samsung 502HJ
HAF 912+ with 2x120mm fans 2x200mm fans
Sapphire Pure 625W

Flash back to the BIOS that worked for you and report your findings to MSI technical. >>How to contact MSI.<<
Use the forum flasher in the future. Its safer. >>Use the MSI HQ Forum USB flasher<<

Fan speed up after 10.4.3 update

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