Fans stay at ~1800 RPM no matter what!
Hello,
I've got a previous gen mini (out if warranty, too). I am using smcFanControl and it tells me that my mini's fans stay at around 1800 RPM, no matter what. More than a few times, the temperature has gotten to 160 F, and the fans stayed at ~1800 RPM.
Is this a known issue? Would it warrant a replacement?
Thanks for your help!
Do you actually hear the fan?
I mean does your mini get noticeable loud. If not I'd say it's just a bug with smcFanControl since I've run it on my mini and sometimes it give pretty incorrect info for some reason. If you have Windows installed via bootcamp you can install something like speedfan or try another software to verify the reading are correct.
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My cpu stays on 3600 rpm. Therefore my fan's run at 4800 rpm. Did a smc reset and al the other reset. Help me please. Apple cant help. I even clean the fan.
I have tried everything you can find on the net. From unplug the cable cord to cleaning fans. Smc reset en pram reset. Eeven more. Its a Intel imac 24 inch 2009. HelpHooray, I think I found a solution.
Using terminal commands there actually is a way to force smcFanControl to set a tolerable max rpm for the CPU fan.
WARNING:
Be aware that this solution should only be used if you know what you're doing and you are absolutely sure the CPU fan on your iMac is indeed out of control.
Forcing a low max speed on a healthy CPU Fan with fully functioning sensors can seriously damage your Mac. You have been warned.
The solution:
Install smcFanControl
Go to the terminal and use these commands to regain control of your noisy iMac:
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This will set the CPU Fan to max at 1200 rpm: (Oh yes!)
To revert to standard settings use:
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This will set CPU Fan to max at the default 3900 rpms
You might have noticed that the last 4 digits are the fan speed (in hexidecimal)
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1100rpm = 1130
1500rpm = 1770
3900rpm = 3cf0
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I've got a MacBook Pro 2.4 GHz Core 2 Duo.
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Hi guys,
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Hi , i have late 2011 model of 13 inch macbook pro. Installled mountain lion . Around 200 gb of free space. Now when i start my mac os the icons lag and it takes time to open up even scrolling the mouse you can see it drag and also the fan runs at high rpm .The cpu processesor runs at peak. When i switch on the windows the fan noise still there but the performance is good.Please advice me what might be the problem and what shall i do to solve it.
Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing.
Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.
Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then copy it. The headings “Step 1” and so on are not part of the commands.
Note: If you have more than one user account, Step 2 must be taken as an administrator. Ordinarily that would be the user created automatically when you booted the system for the first time. The other steps should be taken as the user who has the problem, if different. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign (“$”) or a percent sign (“%”). If you get the percent sign, enter “sh” and press return. You should then get a new line ending in a dollar sign.
Step 1
Triple-click the line of text below on this page to select it:
kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}' | open -f -a TextEdit
Copy the selected text to the Clipboard by pressing the key combination command-C. Then click anywhere in the Terminal window and paste (command-V). A TextEdit window will open with the output of the command. If the command produced no output, the window will be empty. Post the contents of the TextEdit window (not the Terminal window), if any — the text, please, not a screenshot. You can then close the TextEdit window. The title of the window doesn't matter, and you don't need to post that. No typing is involved in this step.
Step 2
Repeat with this line:
{ sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix)|org\.(amav|apac|cups|isc|ntp|postf|x)/{print $3}'; sudo defaults read com.apple.loginwindow LoginHook; sudo crontab -l; } 2> /dev/null | open -f -a TextEdit
This time you'll be prompted for your login password, which you do have to type. Nothing will be displayed when you type it. Type it carefully and then press return. You may get a one-time warning to be careful. Heed that warning, but don't post it. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
Note: If you don’t have a login password, you’ll need to set one before taking this step. If that’s not possible, skip to the next step.
Step 3
{ launchctl list | sed 1d | awk '!/0x|com\.apple|org\.(x|openbsd)/{print $3}'; crontab -l 2> /dev/null; } | open -f -a TextEdit
Step 4
ls -1A /e*/{la,mach}* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta}* L*/Fonts .la* 2> /dev/null | open -f -a TextEdit
Important: If you formerly synchronized with a MobileMe account, your me.com email address may appear in the output of the above command. If so, anonymize it before posting.
Step 5
osascript -e 'tell application "System Events" to get name of every login item' | open -f -a TextEdit
Remember, steps 1-5 are all copy-and-paste — no typing, except your password. Also remember to post the output.
You can then quit Terminal. -
i received leopard earlier today and installed it, and since then the fans are stuck at 2000 rpm (+/- 5 rpm).
during normal use this is okay, cpu temperatures stay at about 52 C/125 F. but if i start any more processor intensive application (vmware fusion, civ IV, etc.) the temperature rises up sharply but the fans stay stuck at 2000 rpm. when the cpu temperatures reach 80 C/176 F i kill the app because i can't afford to burn my processors.
on 10.4.9 the fans would be running at 6000 rpm at those temperatures...
does anybody know what's going on? i'm feeling a bit panicked and don't dare properly use my mac...wow! you are a lot braver than i am. i didn't dare let the temperatures go over 80C.
but following your example i decided to test too, and at about 82C the fans started ramping up (though slowly!) allowing the temps to reach over 87C before lowering them again to 80C at about 500 rpm.
it just seems freakily high to me, i hope the apple engineers know what they're doing.
anyway, thanks for testing this for me and solving my problem, i'm more at peace now.
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