Talk:Patch for controlling fan speed

Windows XP port

How would I port this patch to Windows XP?

--Jason

You can't. But you can write a Windows device driver based on the specs and ibm-acpi.

--Thinker 18:54, 7 Nov 2005 (CET)

gkrellm support

I can confirm that it works on Thinkpad T43 here. However after applying the patch, the fan speed monitor of gkrellm 2.2.7 cannot read value correctly. Maybe we gkrellm is reading the second line for speed but instead find the line for level, so it got confused? Would it be possible to interchange the lines so that speed still appears in the second line and level appears in the third instead? I'm no coder, just a suggestion to improve the patch.

--Jiang

I'd say it's a bug in gkrellm. It should parse the line header rather than relying on line numbers. But feel free to change (and test) the patch if you wish.

--Thinker 05:14, 26 Oct 2005 (CEST)

patch to keep gkrell working against 2.6.14

As in "works for me on a T43p", use with caution at your own risk. And thanks to thinker for the original patch, very nice work.

(See article for the actual patch)

--Spiney

Looks excellent, why not add it to the article page? Also, care to provide a license (preferably public domain like my patch) so the kernel guys can handle it? Speaking of which, the kernel people seem to like their patches generated via "diff -up vanilla-kernel-2.6.14 patched-kernel-2.6.14".

--Thinker 22:04, 1 Nov 2005 (CET)

Done, using the -p option for diff and "borrowing" your sentence for licensing purposes.

--Spiney

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Updated script for unpatched kernels

Moved to the ACPI fan control script article page, after joint development by Spiney and Thinker.

whats the problem kernel 2.6.14

hi all,

i patched the kernel with the patch for 2.6.14 with the option: /usr/src/linux # patch -p0 -l -i ../ibm_acpi.patch (which i copy&pasted)

they dont show me errors or so. but after i reboot and load the modul ibm_acpi i cant see any /proc/acpi/ibm/fan

whats the problem? copy&past ( tab -> space?) or is it a problem in my kernel config?

greetings and big thx from .ch,

system: ibm thinkpad t43p kernel: 2.6.14

--62.203.29.204 19:22, 9 Nov 2005 (CET)kru

You need to pass the "experimental=1" module parameter to ibm-acpi:

# modprobe ibm_acpi experimental=1

--Thinker 21:01, 9 Nov 2005 (CET)

big thx!!! problem solved.

--62.203.29.204

Fan control does not work with Suse 10.1 ?

Hi,

I successfully installed and used the fan control script on my T43p with Suse 10.0.

Yesterday, I installed Suse 10.1 from scratch. Unfortunately fan control does not work with Suse 10.1:

\# echo level 2 > /proc/acpi/ibm/fan bash: echo: write error: Invalid argument

Are there any substantial differences between Suse 10.0 and 10.1 with respect to ibm_acpi?