MB990 and SL - Fan speed is not increasing automatically

Hi Guys,
Two days ago I changed my macbook's hard drive to a bigger one and did a fresh install of Snow Leopard.
As soon as I installed the SL I noticed my computer was running hotter than the previous installation. Without doing anything, my macbook is reaching 75C (167F).. I have already checked the activity monitor and no process is using the CPU. Now I realized that the fan speed is not increasing automatically, it is always fixed at 2000rpm even if the temperature reaches 72C.. I have already tried a SMC reset but the problem persists..
Does anyone know a solution for this? The problem is the fan speed that is not increasing..
I'm having to use smcFanControl to control de fan speed manually. Before the fresh install I was using Snow Leopard updated from the Leopard and I was not facing this problem.
Thanks a lot!

Hi there... i have the same problem. my temperature gets up to 75C with just one window open in safari or google chrome. I have downloaded smc Fancontrol but ...its not enough. have u solved this problem yet? i'm going in to the Genius Bar tomorrow to see if they can help.

Similar Messages

CPU heats up on file copy/backup and fan speed does not increase

Hi Friends,
I have been having issues with fan in my Dell Studio 1555. It has an ATI Radeon card and I had installed the proprietary catalyst driver as the open source driver is too noisy.
Recently, I noticed that on accessing my hard disk and copy files or running backup (luckybackup), the temperature shoots up from around 60 deg C (just using chrome) to 100 deg C when it would shut down itself. However, it seems like the fan speed does not increase with the increase in temperature to help it cool down.
I tried to get the fan speed details with "lm-sensors" but it would not show the fan speed. Here is the output of sensors:
[user@domain]$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +60.0°C (crit = +100.0°C)
temp2: +59.0°C (crit = +100.0°C)
temp3: +66.0°C (crit = +100.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +58.0°C (high = +105.0°C, crit = +105.0°C)
Core 1: +58.0°C (high = +105.0°C, crit = +105.0°C)
Following the Arch wiki, I added acpi_enforce_resources=lax to kernel parameters but it did not help as well.
Here is the main problem:
1. CPU temperature shoots on accessing hard drive but fan speed does not increase - Any guide/direction to investigate would be really helpful.
2. Sensors does not show the fan speed. Read about i8kutils, but couldn't figure out how to get it working with systemd. Any indicators here?
Last edited by ravisghosh (2013-07-01 05:22:01)

luuuciano wrote:Ravi, did you solved it?
Im having similar issue on a vostro 1710, fan never works... :-/
The fan was bad. I had to replace the fan. However, I have not been able to figure out how to see fan speed in sensors.
Last edited by ravisghosh (2013-09-08 15:57:37)

Gtx 680 high temps and high fan speed

I have my card since a few months and I always thought it was normal, until 2 days ago when a friend came over with his card an we did some tests to compare.
When I play most games my card is at about 70-80c and 70-80% fan speed.
We did a simple burn in test with furmark and after 2 minutes my card was at 84C and 78% fan speed while his was in the 60C range while staying quiet.
Of course his card was fresh out of the box and his case is bigger, so more spacing, but mine has more cooling, especially for the gpu. Could it be the thermal paste? I see people having way better results with this card than what I am getting...

Quote from: dude on 25-March-13, 01:01:37
Since it is a pretty new card I think it's airflow in your case. I read somewhere here someone gave instructions for replacing thermal paste.
My card is about 6 months old. It's just that I always thought it was normal, even if I was disappointed with how loud the card was, since I bought this one espcially for the good cooling and low noise that I've read in so many reviews and tests before buying.
However, my friend's card is brand new. He came at my place so I could build his computer. My case is a full atx tower, while his case is etax. But, my cooling was done and redone many times, espcially since my card was loud and hot, I decided to change my cooling (which did not even change 1C). I clean my case really often and my fans are well arranged to get the best airflow possible, while my friend's case has less fans and are not optimzed (intake-outake...) to have the best airflow.
Maybe the spacing really is for something, but 84C in 2 minutes of furmark with almost 80% fan speed is a lot.

CPU Temp and CPU Fan Speed

I am having a strange problem . One time I will boot the PC and CPU temp is 43 and CPU fan speed is 1308 rpm in Core Center. I do a restart system and the CPU temp is 32 to 36 and CPU fan speed 3308. Not sure if I should trust Core Center . Bios shows CPU temp 48 and fan speed of 3328. I have been reading here that there are a bunch of threads containing some kind of problem with CPU temp or fan speed. My Bios is 1.4. If anbody can give me some ideas that would be great.

Open CoreCenter on deshtop. Click where it says CoreCenter. Click Cool&Quite button. Then Click apply. This drops the fan speed back into the 1400 range and the temp will rise back to the 40s.

T430s fan noise and fan speed monitor not working?

Hi, I just bought this T430s from the outlet store. I noticed a rather loud fan noise and found out s lot of compalints about the T430 model. I guess the problem I have is not as severe as those T430 users (e.g. the noise may not be as loud), but I still want to monitor the fan speed. Here's my problem:
1. none of the third party software can show fan speed, they can only show the cpu temperature, such as speedfan and aida64.
2. I tried to download the fanspeedcontrol driver from lenovo, but after installing it, the task manager does not show that the fanspeedcontrol exe. is working.
I do not want to change the fan speed, but just want to monitor the speed so that I can have a better understanding of whats going on. Does anyone have the similar problem?
Thanks.

Hi Alan, (I know this conversation was from several months back),
I don't know the answer to your questions. It seems that your fan is operational, as far as its most basic functional requirement.
I don't have experience with any particular software programs or widgets that indicate fan speed, sorry.
Do you have any view, through software, of the CPU (and GPU?) sensed temperature? Those would be very good data to observe.
If it were either disconnected or non-functional, I assume that your computer would report a POST error right after power-on (and self test).
But I just wanted to suggest here that in an unfortunate possible scenario, consider if the thermal grease on the heat sink(s) was inadequate (or was missing), then the fan would be running higher than normal (probably always spinning at a high rate), and it won't be taking enough heat away from the processor(s), i.e. inadequate cooling.
Which could be corrected by a technician (or DIY). This is pure speculation, it is not a definite, at all.
Larry

Fan Speed will not adjust/Too Noisy

I just installed my new MSI R6670 card. This card was reviewed as being very quiet but I immediately thought just the opposite. It sounds like the fans are running at 100% all the time overwhelming the sound of all other fans in my system.
The CD came with AMD's 8.84 driver so instead I went ahead and downloaded the latest 11.6 and included catalyst control center. CCC acted like it was adjusting the fan speed but there was no change in sound - like the fans were still running at full speed even though it said they were not. So I uninstalled CCC but left the 11.6 driver in place and installed MSI's Afterburner software. In the left hand pane it claimed the speed was set to Auto and currently at 44%. But in the hardware monitor section it lists the speed as 0% with occasional blips but mostly staying at zero. Turning off auto control and dragging the fan speed slider all the way to the slow side and clicking "apply" seems to have no impact on the sound and the hardware monitor keeps reading zero. Its showing the temperature at a steady 39 which doesn't seem excessive. Its looking to me like the software may not be able to monitor the fan speed so its just staying at 100% all the time.
Please help! I bought this card because the Radeon 6670 was supposed to be the most powerful card that would run without its own PCIe power cable and also because the reviews said it was very quiet. Right now it is anything but quiet!

I just pulled the card and disconnected the wire. They are definitely 4 wire fans. FYI Afterburner is crap as far as telling you what the fan speed is. When I put the card back in I left the wire disconnected and briefly started the system with the card running fanless. Afterburner still showed the fan speed as whatever the it was SUPPOSED to be running and showed the speed increasing with temperature, even though the actual fan speed was zero. So their software isn't even actually monitoring the speed. It is just telling you what the fan speed should be not what it is. Going through the threads on this forum, I'm seeing several others with different models of MSI cards having this same problem.

Macbook Air 2013 fan speed doesn't increase with temperature

I've been noticing this for the past few days now. Even with some minor CPU activity (browser, iTerm along with music playing in the background), temperature increases after some times (according to iStatMenus - CPU Core PECI). What's curious is that unless I use iStatMenus to increase the CPU speed, the default settings don't cause the fans to speed up in order to lower the temrerature. So if my temperature goes up to 50C or above - at the time of writing this, it went up to 55 - the exhaust speed remains around ~1200RPM. It even went as high as 70C once, and yet there was hardly any increase in fan speed.
I'm even more bothered that there doesn't even seem to be any real corelation b/w CPU consumption and the temperatures. At least not any that I have observed so far.
I use the Air on a flat wooden table. I even have the backside propped up so the laptop's backside is isn't even touching the surface.
So, what's the deal here? Any programs you guys recommend that I can use to customize the temperature/fan-speed curve (kinda like I can do with my PC using Afterburner) ? Not that I'm a fan of all the noise, but I'd rather have a noisy laptop than one with a degraded CPU life because of high temps).

Its not CPU use and temp but CPU/GPU temp and fan.
All such fan control are useless patches to correct either fundamental misuse or a flaw at some level.
What model Air do you have, 2013 Air runs much cooler.
Reset SMC
SMC reset
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
Do you have any actual evidence your Air IS running hot? If not, dont worry.
70C or 158F isnt that hot or "on the verge" of thermal shutdown.....212 F
no worries

Mac mini slow and high fan speeds

Hello! I have a 2011 mid range mac mini and love the machine, however I have noticed a few things. First off, it seems to be a bit on the slow side when multitasking. I have the standard 4 gigs of ram installed, but running programs like MS Word and Safari at the same time, the machine seems to struggle a bit. Also I have noticed when doing a lot of file transfers via USB, the fan will kick up to high gear for a few minutes and then drop down. Is there something wrong or is this normal? I'm doing a time machine backup of 120Gigs, have safari open and activity monitor open.
Activity monitor states 1.16Gigs free, 792MB wired, 961.4MB active, 1.12GB inactive, 2.84GB used. VM size is 150GB, page ins are 962, outs are 380kb, swap used is 10.5MB. Right now the fan seems to have slowed to a mid range mode of some sort and is not in high gear. Thanks!

How many apps you instaled? how many pictures videos and time you get usigm it? let them a litlle sleep, and your mac nmini will ne wel.
As far as the fan is concerned, it will rev up and down
based primarily on CPU load. If something is using
up a lot of processor, it gets hot and therefor the fan
speeds up to cool it down, or atleast maintain a safe temp.
When the fan revs up, open Activity Monitor and see how
much processor resources are being used and look at
the list to see if any one process is using up CPU. This
can also give an idea of what may be slowing things down
as well.
And yes, when doing a lot of file transfers, things may
possibly rev up a bit if it is continuous for a period of time.

MBP Freezes (have erased and installed, ran disk utility, and inc fan speed

Hi Guys, Any advice on this issue would be very much appreciated please.
Have had an original mbp for about 2 and a half years. Last few weeks it's been freezing between 1 and 5 times a day. By freezing I mean that the screen freezes and there's no cursor or keyboard fuctionality. Sound stops too. This happens using World of Warcraft, Pages, Office for Mac, and Safari, sometimes also the finder. Main culprit though is Safari and WoW. For comedy value, I'm a priest in WoW and it froze during a raid which resulted in the whole group wiping out! Great timing! lol
So far I have:
Ran disk utility, repaired permissions and verified disk.
Did a complete erase and install.
Downloaded Fan Control and set to 3400 base speed, left fan @ 3503 RPM and Right fan @ 3508 RPM - temp reads 46.9 oC (118 oF)
I'm guessing that since my erase and install, that it is very much a hardware issue as the problem has happened again.
Since I've done the fan thing, nothing has frozen so far but I only did it about an hour ago.
If anyone could offer any other suggestions in case it does freeze again I'd be very grateful indeed :0)
Oh - one thing I don't get is that only about 4 hours after my erase and install I did the disk utility once more (Repair permissions and verify) and it came up with the below list - which is huge given it was a fresh install. Not sure if the below info will help (not really sure what it's for tbh - but there it is.
Many thanks,
Vizzy
Permissions differ on "System/Library/Frameworks/CoreVideo.framework/Versions/A/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
Permissions differ on "System/Library/CoreServices/AirPort Base Station Agent.app/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
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Permissions differ on "System/Library/PrivateFrameworks/CoreMediaIOServicesPrivate.framework/Versions /A/Resources/IIDC.plugin/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
Permissions differ on "System/Library/PrivateFrameworks/CoreMediaIOServicesPrivate.framework/Versions /A/Resources/MPEGAudioDecoder.component/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
Permissions differ on "System/Library/PrivateFrameworks/CoreMediaIOServicesPrivate.framework/Versions /A/Resources/MPEGLayer2AudioEncoder.component/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
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Permissions differ on "System/Library/CoreServices/Front Row.app/Contents/PlugIns/Podcasts.frappliance/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
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Permissions differ on "Applications/QuickTime Player.app/Contents/CodeResources", should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "Applications/QuickTime Player.app/Contents/PlugIns/AnnotationInspector.propPane/Contents/CodeResources ", should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "Applications/QuickTime Player.app/Contents/PlugIns/AudioSettingsInspector.propPane/Contents/CodeResour ces", should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "Applications/QuickTime Player.app/Contents/PlugIns/DataRefInspector.propPane/Contents/CodeResources", should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "Applications/QuickTime Player.app/Contents/PlugIns/HintTrackInspector.propPane/Contents/CodeResources" , should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "Applications/QuickTime Player.app/Contents/PlugIns/NetworkInspector.propPane/Contents/CodeResources", should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "Applications/QuickTime Player.app/Contents/PlugIns/SettingsInspector.propPane/Contents/CodeResources", should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "Applications/QuickTime Player.app/Contents/PlugIns/VisualTrackInspector.propPane/Contents/CodeResource s", should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "System/Library/QuickTime/QuickTimeComponents.component/Contents/CodeResources" , should be -rw-r--r-- , they are lrwxr-xr-x .
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Permissions differ on "System/Library/QuickTime/QuickTimeVR.component/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
Permissions differ on "Library/Internet Plug-Ins/QuickTime Plugin.plugin/Contents/CodeResources", should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "Library/Internet Plug-Ins/QuickTime Plugin.webplugin/Contents/CodeResources", should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "System/Library/Frameworks/QTKit.framework/Versions/A/Resources/QTKitIBPlugin.i bplugin/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
Permissions differ on "System/Library/Spotlight/QuickTime.mdimporter/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
Permissions differ on "Library/Audio/Plug-Ins/HAL/iSightAudio.plugin/Contents/CodeResources", should be -rw-rw-r-- , they are lrwxr-xr-x .
Permissions differ on "System/Library/Frameworks/QuickTime.framework/Versions/A/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
Permissions differ on "System/Library/PreferencePanes/QuickTime.prefPane/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
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Permissions differ on "System/Library/PreferencePanes/QuickTime.prefPane/Contents/Resources/QTAdvance d.prefPane/Contents/Resources/QTMediaKeys.bundle/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
Permissions differ on "System/Library/PreferencePanes/QuickTime.prefPane/Contents/Resources/QTAdvance d.prefPane/Contents/Resources/QTMime.bundle/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
Permissions differ on "System/Library/PreferencePanes/QuickTime.prefPane/Contents/Resources/QTAdvance d.prefPane/Contents/Resources/QTTransport.bundle/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
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Group differs on "Library/Internet Plug-Ins/JavaPluginCocoa.bundle/Contents/CodeResources", should be 80, group is 0.
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Group differs on "Library/Internet Plug-Ins/JavaPluginCocoa.bundle/Contents/Resources", should be 80, group is 0.
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Group differs on "Library/Internet Plug-Ins/JavaPluginCocoa.bundle/Contents/version.plist", should be 80, group is 0.
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Permissions differ on "System/Library/Components/AudioCodecs.component/Contents/CodeResources", should be -rw-r--r-- , they are lrwxr-xr-x .
Permissions differ on "private/var/spool/cups/cache/rss", should be drwxr-xr-x , they are drwxrwxr-x .

According to Mactracker, your Mac could recognize 3 GB of RAM:
http://www.mactracker.ca/
One thing to check is your RAM usage while playing WOW. I am not a gamer, so I don't know if you can play with your Dock visible, but if you can, here is an easy way to keep track of your RAM usage.
Go to Activity Monitor (in your Utilities folder in your Applications folder) and put it in the Dock. Then while in Activity Monitor, go to View (in the menu bar)>Dock Icon and select "Show Memory Usage".
You want to see a lot of green in the pie chart. If you don't, you are running out of RAM and then the computer turns to your hard drive to fulfill the functions of RAM. This process is much slower, and I could see it resulting in freezes. If you find that the green virtually disappears while gaming, you could well benefit from upping the RAM by another 1 GB to 3 GB total.
Good luck!

MSI P6NGM-L system temperature and processor fan speed

Hi folks,
I've got a MSI P6NGM-L board that is reaching a system temperature of 46ºC-47ºC at everyday load (not playing games or doing heavy work... just browsing, email, text editor, etc). My case has got a frontal and rear 120mm (exaustor) fan, and my processor (Core 2 Duo E7200), an Akasa AK-965BL cooler. My graphics board is a XFX Geforce 9800GT with Zalman FC-ZV9 cooler. Overall temperature is just fine, except for the system temperature, that is 32ºC when the system is turned on and is cold, and reaches about 47ºC after some time and using. I disabled the onboard NVIDIA on BIOS, but that didn't make any difference. Is that temperature OK for my configuration, or somehow high?
I thought about taking off the northbridge heatsink and applying Arctic Silver 5 in it, but I don't know if that would make any difference, and it would give me a big job, because I would have to take the board off... so I don't know if it's worth.
Another question, is P6NGM-L board PWM compatible? I tried using speedfan to control the processor's temperature but it says it's at 100%, and I know the cooler is in silent operation. If so, what software should I use to control the processor fan?
Thanks for any help

I don't have a way to measure my room's temperature, but it's quite hot... something like 26ºC.
I thought that with all the cooling I've got inside my case the system temp would get lower, but it is still the same under normal load, even since my case had only one exaustor and stock coolers.
What about the processor's fan speed? Can I really change it by software? I plan to do some overclocking, so I would like to do tests with the processor cooler in full speed... I've googled all the way around, but couldn't find substancial information about P6NGM-L support for that.
Thanks

MSI GT683 Black Screen and full fan speed at startup

Hello!
SO this morning i woke up and was about to start my lovely laptop.
I pressed the on button and the screen remained black and the fan sped up slowly and slowly, after 10 sec it was at full throttle!
Yesterday i got tired and put my laptop to "sleep mode" because I meant to use it later, but I fell asleep can something have happened by that?
I have had this laptop for 3 months, never had a single problem. But now this :(
And a really need my laptop for school now!
When i bought it one 2GB ram module was changed to a 4BG so the total would be 8GB, and a 60GB SSD was installed on the second HDD slot.(Boots on 22 sec )
I have played a few hours of COD MW3 but i have a coolermaster laptop cooling pad with 2 fans, so the laptop did not get so hot when i played.
So please anyone help?
(I´ve tried booting with only one ram installed and tried my ssd in my other laptop, both are fine.)

I know this is an old topic but I just had the same issue and wanted to post my results in case anyone else was having this issue and stumbles on this thread. I was playing a game on my laptop, temperatures were well within the normal range, and suddenly the computer made a sort of "zap" noise and the screen went black. The computer also fell deathly silent but the power light (the shield) was still on. No indicator lights on the mouse pad and the orange lights around the screen had gone out. I had no choice but to do a hard shutdown. When I turned it back on, the screen remained black, the power light remained lit, but no other lights on the computer. The fan was on ultra speed in a way that I have never heard my fan run. I smelled the exhaust to see if I smelled burning but there wasn't any sign of that. Anyway, I let the computer rest, tried again the next day with the same result. I contacted my warranty company, started a claim, and waited for them to send me the box so I could ship my laptop to them. In the meantime, determined as I am , I tried the laptop several more times in the next few days just to see if I would have any luck. Sometimes the fan would come on and sometimes the laptop would be ghostly quiet but otherwise everything else was the same. Same blackness, same nothingness. I immediately assumed this was a major malfunction, most likely the motherboard. When the warranty company took the information for the claim, they agreed that it sounded like the motherboard or possibly the hard drive.
Three weeks later, my laptop is on its way back to me. I received word from the warranty company that the issue was the graphics card. This completely blew my mind as I wouldn't expect the graphics card to prevent the indicator lights from flashing, the soft touch keys at the top of the keyboard, the lights on the sides of the screen, etc. They are the experts however, right? They said the video card malfunctioned. They replaced the video card and now the laptop is in working order. They are sending it back to me now and I should hopefully receive it in the next couple of days.
Sorry for the looooooong response but I wanted to give as much info as possible because I couldn't really find anything when I was searching for this same issue. Hope it helps someone!

Can 945P Platinum control on-board sysfan, nbfan and pwrfan fan speed?

I bought a couple of 8" case fans. These fans comes with a connector (with 3 wires) which i connect to the motherboard fan connectos (pwrfan, sysfan, nbfan). Using "SpeedFan" software, i can see the RPM of these fans and even my CPU fan. But it seems that i can only control the speed of the CPU fan, but not the other fans. I reduce the fans speed to "0" on SpeedFan but the RPM does not seems to be affected.
Can the RPMS of the fans be adjusted fron SpeedFan? ???

I too am having problems with Speedfan. My PL945 Neo5-F reports, in speedfan, the existence of 4 fans.
Looking in the manual to identify what's what, it states that it supports 3 fans - CPU, Sysfan2 and pwrfan2 - what happened to sysfan1 and pwrfan1?
Anyway, I managed to work out that although speedfan reports 4 fans, it seems only able to control cpufan1 (fan1) and sysfan2 (fan 2). Neither fans 3 and 4 map to pwrfan2 (what is being reported).
If anyone has cracked this nut, please let me know.
I suspect it is something to do with the address the other fans report to - but I don't know how to find and fix it.
Core Center simply crashes and won't let me do anything. In fact, I can't get the front end to even appear now, no matter how many times I uninstall and install it.
I'm running Vista HP with 2 gb and a core 2 duo 6550. Graphics is a Saphire Radeon 3600).

High fan speed (but not 100%) following hard drive upgrade

Hi,
I recently upgraded the hard drive on my 2007 Mac Mini to a 320Gb Western Digital Scorpio Black. Since then, the computer's fan has been very annoying. The fan is not running at 100% all the time, but it ramps up very quickly when the computer is under the lightest of loads. Simply scrolling a webpage will send the fan speed up to around 4500 - 5000 rpm.
My first instinct was that the 7200 rpm drive was creating too much heat, but the temperatures are all fine with the hard drive around 30 - 35 degrees C and the CPU around 35 - 40 degrees C, at a fan speed of 1500 rpm. The temperatures drop down to the 20s when the fan ramps up.
The problem is as described in this article: http://support.apple.com/kb/HT3964
"The computer's fans run at high speed although the computer is not experiencing heavy usage and is properly ventilated."
I've followed the reset SMC procedure several times and yet the problem persists. Can anyone help me to solve this problem? Given the low hard drive temperatures and the fact that the fan is spinning up without disk activity, I'm hoping the drive isn't to blame. I'm getting fairly experienced at working inside the mini, having done three memory upgrades and two hard drive changes, but I would still like to avoid opening it and changing the disk again.
Thanks,
David.

Same thing happened to me. Upgraded HD and RAM, fan spins up at a mere scroll of a web page.
I checked the usual suspects -- vents, foam "T", physical placement, cables back in place.
Also, I went back to the original equipment and found it still "wound up" quickly.
Another data point -- when the fan is accelerating and when at speed, the air coming out of the vents is not very warm. Windows laptops I use discharge very warm air when the fans spin up. Could the calibration of the CPU temp guage be off?

High CPU usage, overheating, and high fan speed on DV4-1125nr

the process igfxsrvc.exe is running in between 30 and 40 of my CPU. my total CPU is about 55% or so while idle. i tried disabling that driver, and it's CPU went down to about 20, but my total CPU was still at the same place, if not a little higher. also, my computor is overheating a lot, and my fan is constantly running on it's highest speed. i do not believe that this is caused by a dirty vent. also, I have checked the version of the graphics driver and the BIOS(both of which i saw the suggestion to update by several people having similar problems) and both are up to date. what is the problem? am i being highjacked/ infested with viruses and i dont know it despite having already ran all my virus protection and anti-malware programs? someone please help before i have to take it to geek squad! thank you in advance!

Hello,
I decided to sacrifice a little bit of performance for the sake of cool temperatures and silent fan. I have HP DV6, with AMD Turion RM-74 and HD4650.
So, Yes, You will loose up to 15 percent Your CPU power, but heyh, this processor is so fast that You will barelly notice the change. You will still watch HD content with 720p and everything else smoothly. Note, that gaming will be harder part but consider Your laptop not as a device created for heavy gaming.
At one point or another, during games, someday Your notebook inevitably colapse. It's just not meant for gaming, no matter what the specs are...
So, how to reduce Your notebook temps:
(i) Power Options -> More power options,
(ii) Balanced plan -> Change settings,
(iii) Change advanced power settings
(iv) Processor power management -> Maximum processor state -> On Battery - 50 percent, Plugged in - 85 percent.
(vi) Save changes and close.
Now, mine temperatures are - idle 48, heavy load - 57, extremelly heavy load (HD 720p content) - 62-63. (At the moment my CPU cores are at 47 celsius).
CPU still works fast, not so fast as it is working on 100 percent, but hey, fan is silent, and if You want gaming - go to Your desktop pc, leave notebook for lighter tasks, even though the notebooks specs are high,
it simply cannot handle the heat.
Best regards.
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Can't reach max (also with fancontrol) and min fan speed manually

I'm using fancontrol to control my fan's speed. One thing I noticed is that maximum fan speed is never reached even when temperatures exceed max limit.
If I set max temperature in /etc/fancontrol to 55 and restart fancontrol, 55+°C will cause fan to speed only at ~5800 RPM. If I set min temperature to 60, fans will completely stop. 'pwm_enable' is set to 1 when fancontrol is running.
Now if I stop fancontrol, fan will speed up to ~6460 RPM while 'pwm' is at 255 and 'pwm_enable' changed to 0. I can't change 'pwm' value at this point. If 'pwm' gets set to 0, fan will completely stop.
At this point fancontrol is still not running. If I set 'pwm_enable' to 1 and leave 'pwm' at 255, fan will slow down to ~5800 RPM. If I set 'pwm' to 0, fan will not slow down completely, but will instead slow down to ~2080 RPM.
What's interesting is that although fancontrol can't reach max fan speed, it can stop fan completely, while I can do neither manually.
Any idea how to enable at least max fan speed for fancontrol?

I'm using fancontrol to control my fan's speed. One thing I noticed is that maximum fan speed is never reached even when temperatures exceed max limit.
If I set max temperature in /etc/fancontrol to 55 and restart fancontrol, 55+°C will cause fan to speed only at ~5800 RPM. If I set min temperature to 60, fans will completely stop. 'pwm_enable' is set to 1 when fancontrol is running.
Now if I stop fancontrol, fan will speed up to ~6460 RPM while 'pwm' is at 255 and 'pwm_enable' changed to 0. I can't change 'pwm' value at this point. If 'pwm' gets set to 0, fan will completely stop.
At this point fancontrol is still not running. If I set 'pwm_enable' to 1 and leave 'pwm' at 255, fan will slow down to ~5800 RPM. If I set 'pwm' to 0, fan will not slow down completely, but will instead slow down to ~2080 RPM.
What's interesting is that although fancontrol can't reach max fan speed, it can stop fan completely, while I can do neither manually.
Any idea how to enable at least max fan speed for fancontrol?

MB990 and SL - Fan speed is not increasing automatically

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