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Thinkpad T41 Fan, CPU won't stop
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dgtaro
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Joined: 01 Nov 2003
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Location: Amsterdam

PostPosted: Fri Jul 02, 2004 9:44 pm    Post subject: Thinkpad T41 Fan, CPU won't stop Reply with quote

Hi,

I just installed Kernel-2.6.7-gentoo-r6. I USED=APM. Now, everything else works fine (to the best of my knowledge, that is), except that the fan on this thing would not stop! I don't know what else I have to install in order to manage this component.

Suggestions? Insights? Enlightment?

Thanks.
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megadonkey
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Joined: 24 Apr 2004
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PostPosted: Sat Jul 03, 2004 1:48 am    Post subject: Reply with quote

I don't have a laptop so maybe I'm wrong.
But I think you should try acpi instead.
Enable that in the kernel. I think you need to emerge acpid too.

As I said, I may be completely wrong but it doesn't hurt to try.
:)

ed:
Found a link
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ssr
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Joined: 29 Jul 2003
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Location: Connecticut

PostPosted: Sat Jul 03, 2004 2:43 am    Post subject: Re: Thinkpad T41 Fan, CPU won't stop Reply with quote

Have you enabled laptop mode? Do you have cpufreqd or cpudyn installed? I have a T42, pretty much the same thing... My machine was idling at 47C. After enabling laptop mode, enabling cpu frequency scaling in the kernel and installing cpufreqd its idling at 37C.
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dgtaro
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Location: Amsterdam

PostPosted: Sat Jul 03, 2004 11:50 pm    Post subject: Reply with quote

>>enabling cpu frequency scaling in the kernel and installing cpufreqd its idling at 37C.

Ok, I'm going to try cpu frequency scaling as well as apci.

My understanding is I have to compile all this at the kernel. Right? And then emerge both APCI and CPUFREQd. Right?

Is there some particular steps I need to follow?--tutorial, sorta, but not really. :wink:

I never really compile or install any new module for the kernel before. But I guess it should be pretty straight forward, correct?

Thanks guys!
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megadonkey
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PostPosted: Sun Jul 04, 2004 1:37 am    Post subject: Reply with quote

Did you look at the link I gave you?
If you mean how to compile the kernel you can follow the steps in the install guide.
Basically you do:
Code:
mount /boot
cd /usr/src/linux
make menuconfig

Choose options, save and do:
Code:
make && make modules_install
cp /usr/src/linux/arch/i386/boot/bzImage /boot/kernel-2.6.7-gentoo-r6

Check your grub.conf so the kernel line matches the kernel name.
(I hope I didn't forget anything crucial :) )
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bk0
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PostPosted: Sun Jul 04, 2004 7:32 pm    Post subject: Reply with quote

dgtaro wrote:

Ok, I'm going to try cpu frequency scaling as well as apci.


Once you get ACPI working, you can manually control the fan by doing:

Code:

# echo "off" > /proc/acpi/fan/FAN0/state


The fan number may be different or just "FAN" without a number.
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dgtaro
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Joined: 01 Nov 2003
Posts: 106
Location: Amsterdam

PostPosted: Mon Jul 05, 2004 10:37 am    Post subject: Reply with quote

Ok guys, I just recompiled those features into the kernel.<--pretty much followed the Guide here. Then Config. LILO. And Everything works; apparently that's why I am able to post right at the moment. :lol:

For the fan, this is what I have in the directory

/proc/acpi/fan/ <---that's it. No FAN0 nor 'state'
Should I create some file here manually or something?

But...to teh temp. issue...
I checked the temp. with acpi -tf ..it shows 165.2 degrees F. (while compiling mplayer).

Shoud I be worried about this? I never knew my CPU actually reaches this temp. before :?
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