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6 Posts

06-19-2008

Turkey

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  • Message 11 of 31

Re: A solution for Lenovo 3000 Fan noise

2008-06-19, 15:04 PM
Hi Everybody,
I also have the terrible problem with the noise of my lenovo fan. I applied ilker's instructions and it has improved but it is still not as quiet as my previous Dell laptop.
Anyhow for those who can't download the script from ilker's post ( http://www.thinkpad-forum.de/thread.php?threadid=33888&threadview=0&hilight=&hilightuser=0&sid=22006dc051c62b2d1eefa0032deab09c&page=3) , you first need to register, than make a search for LenovoN200_ACPI_0.21 in the forum. You will get it than. If I can upload it to the forum, let me know. I will do it.

Cheers,

Begi
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6 Posts

06-04-2008

jeru

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  • Message 12 of 31

Re: A solution for Lenovo 3000 Fan noise

2008-06-19, 16:14 PM
hey begilhang,
 
can u please upload the file........ i can't read german!!... :)
 
thx
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6 Posts

06-19-2008

Turkey

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  • Message 13 of 31

Re: A solution for Lenovo 3000 Fan noise

2008-06-19, 17:11 PM
Hi,

I am not sure if i can upload it here as I don't see any option to upload here. If you can confirm this I can either upload it to my website or send it to you by email. it is only 2.19 kb. :)
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7 Posts

05-26-2008

Istanbul

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  • Message 14 of 31

Re: A solution for Lenovo 3000 Fan noise

2008-06-19, 22:02 PM
Hi,
I am a bad forum user, I just read the replies. Sorry for late response. I am sending my configuration below.  With this, my computer now is running fanless in idle, and blowing reasonable when surfing. 


Disclaimer : following is very risk for your computer. Changing voltages and fan behaviour voids warranty. Use it with your own risk.


1- I first undervolted my system. (i.e. running CPU with lower voltage without changing the clock speed)  Here is a good guide  : http://forum.notebookreview.com/showthread.php?t=235824
At lower voltages CPU produces less heat. 
(Undervolting takes sometime. )


2- Download and copy following files to acpi folder under NHC. Enable ACPI in NHC. If your system is N200 then it should not give an error. Otherwise change the name of class as explained in first message. Then configure if you want.  Note:  I configured the fan behaviour "aggressively".  It doesn't use fan until temperature reaches to 65C. Please change them as you want.  The fan control is hardcoded them in lenovo.cs file. The "fan config" user interface is useless. Change cs file if you need. For example following line

              if (((_TZ._tz > 72) && (_TZ._tz <= 77)) ||  (_TZ.fan_on_modus == 2))

means  if temperature is between 72 and 77 then fan is blowing with speed 2.



http://rapidshare.com/files/123664146/Lenovo.cs.html
http://rapidshare.com/files/123664147/Lenovo.xml.html
http://rapidshare.com/files/123664148/Lenovo.dll.html


3- If you want even quiter like me, then disable top clock speed in "profile" section in rmclock in step-1. Also increase "Target CPU usage level".  You sacrifice some CPU power of course.

Note: As I mentioned before the author is another person in the german forum. I only updated the cs file.

best.
ilker.


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7 Posts

05-26-2008

Istanbul

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  • Message 15 of 31

Re: A solution for Lenovo 3000 Fan noise

2008-06-19, 22:09 PM
One clarification,


if you want "blow speed" to be 2 between  60 and 75 you will change this line 

  if (((_TZ._tz > 72) && (_TZ._tz <= 77)) ||  (_TZ.fan_on_modus == 2))

with this

  if (((_TZ._tz > 60 ) && (_TZ._tz <= 75 )) ||  (_TZ.fan_on_modus == 2))


in cs file.

After updating cs file restart NHC.

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6 Posts

06-19-2008

Turkey

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  • Message 16 of 31

Re: A solution for Lenovo 3000 Fan noise

2008-06-19, 23:02 PM
Hi Ilker,
Thanks for your post. The lenovo.cs file you posted is great! I was wondering if you modified the original one from the german forum as the one I found is slightly different than yours. Anyhow It is excellent!  you da man ;)

I was wondering if Lenovo will ever post a fix for this? Do you guys think that we can claim a refund as the N series are clearly defected. We have to rely on third party applications to fix Lenovo's defect.

Cheers,

Begi
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7 Posts

05-26-2008

Istanbul

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  • Message 17 of 31

Re: A solution for Lenovo 3000 Fan noise

2008-06-20, 9:30 AM
Hi Begi,

I updated it slightly as you said. I changed the temperature intervals for fan triggering .
It is not so great but I'm glad it worked for you.

I called Lenovo once they asked me to sent the machine for a hardware check. I think this is automatic response to any such complain.

best.



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6 Posts

06-04-2008

jeru

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  • Message 18 of 31

Re: A solution for Lenovo 3000 Fan noise

2008-06-21, 17:49 PM
thank you so much ilker :)
 
i just have one small question...
 
what temp should i choose for the fan to start working? you said you put it on 67c.. it sounds pretty high... that means your fan almost never work, is that ok?
 
should i put it on my max temp that i got after undervolting?
 
thx
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6 Posts

06-19-2008

Turkey

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  • Message 19 of 31

Re: A solution for Lenovo 3000 Fan noise

2008-06-21, 23:26 PM
Hi k-man

I assume you have a merom chip. For Merom's upto 100 Celcius degrees is considered under safe operation range. 125 celcius degrees is the catastrophic thermal protection temperature. You can have a look at it here  http://www.thinkwiki.org/wiki/Intel_Core_2_Duo_(Merom)

I have seen those laptops (core 2 Duos) get quite hot so don't worry if your case gets a little too warm.

By the way I personally did not change any temperature on the lenovo.cs file as I don't really feel the fan now. In the current file which you downloaded, the fan kicks in with the slowest rpm when the temperature exceeds 63 degrees. It stops when it is less than 63. This very small interval makes the fan go on and off if you are using your pc heavily. By making it kick in at  67 degrees, than it will run until the temperature reaches down to 63 and it will stop. So your fan actually work less. So it may be a better idea to make it 67. if you understand the logic, you can also change the whole temperature scheme.
For example:

 if (((_TZ._tz > 63) && (_TZ._tz <= 72)) ||  (_TZ.fan_on_modus == 1))   Means fan works at level 1 when temperature is between 63 and 72.
                
if (((_TZ._tz <= 63)) ||  (_TZ.fan_on_modus == 0 ))  Means when stops when temperature is below 63 degrees.

So by changing the kick in speed of 63 to 67, you will actually make your fan kick in less.
               
              
I was wondering,  what is your undervolt Ilker and k-man? mine is 1.025V at 10x

Cheers,






Message Edited by begilhang on 06-21-2008 05:04 PM
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6 Posts

06-04-2008

jeru

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  • Message 20 of 31

Re: A solution for Lenovo 3000 Fan noise

2008-06-22, 16:12 PM
well, the good news are that it works!
however, the laptop gets very hot very fast, so the fan still needs to work in order to cool it... but that's still better then how it was before... so thanks everybody :)
 
p.s.
Begi, my undervolt is 0.9625 at 11.0x
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