Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!

Bug 307029

Summary: CPU Fan not working on kernel-2.6.31
Product: Gentoo Linux Reporter: iceonfire29
Component: [OLD] Core systemAssignee: Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel>
Severity: normal    
Priority: High    
Version: unspecified   
Hardware: x86   
OS: Linux   
Whiteboard: linux-2.6.31-regression
Package list:
Runtime testing required: ---
Attachments: dmesg output
Kernel config file

Description iceonfire29 2010-02-27 03:35:14 UTC

I installed kernel-2.6.31-r10 in my system and after booting into it i noticed that my cpu fan never worked since that wich made my cpu temperature raise. I had the same problem also with revisions 6 ans 8 of 2.6.31, only kernel-2.6.30-r8 and older versions can make my cpu fan run.
Comment 1 iceonfire29 2010-02-27 03:37:42 UTC
Created attachment 221385 [details]
dmesg output
Comment 2 iceonfire29 2010-02-27 03:39:46 UTC
Created attachment 221387 [details]
Kernel config file
Comment 3 Markos Chandras (RETIRED) gentoo-dev 2010-03-01 07:19:30 UTC
Did you try the latest ~gentoo-sources?
Comment 4 Markos Chandras (RETIRED) gentoo-dev 2010-03-01 07:26:41 UTC
Also did you use lm_sensors? Which version?
Comment 5 George Kadianakis (RETIRED) gentoo-dev 2010-03-01 11:52:28 UTC
Ehm, are you sure that your CPU fan is the one that's not working?
I really don't think that a modern PC can boot without a CPU fan functioning.

Maybe you are confusing it with the fan in the back of the tower?
What CPU temp are you getting if you check in the BIOS or with software sensors of some kind?
Comment 6 iceonfire29 2010-03-03 10:28:59 UTC
(In reply to comment #5)
By the way, sorry I forget to mention that I am using gentoo on a laptop acer aspire (Inte Celeron Mobile)
Comment 7 iceonfire29 2010-03-03 10:33:55 UTC
(In reply to comment #4)
> Also did you use lm_sensors? Which version?

I have lm_sensors-2.10,7 with sensord USE flag enabled 

Comment 8 Markos Chandras (RETIRED) gentoo-dev 2010-03-03 13:52:14 UTC
Your kernel recognizes the cooling device aka the CPU fan

acpi device:3c: registered as cooling_device0

please provide us with a sensors output

I suspect two things

1) hardware issue
2) wrong temp values on sensors, hence cpu fan doesn't need to operate
Comment 9 iceonfire29 2010-03-04 09:59:26 UTC
(In reply to comment #8)

Sensors output:

Adapter: ISA adapter
Core 0:      +49 C  (high =  +100 C)                   

Comment 10 George Kadianakis (RETIRED) gentoo-dev 2010-03-06 00:48:02 UTC
Hey, could you try upgrading your BIOS to the latest official version?
Comment 11 Mike Pagano gentoo-dev 2010-04-08 23:28:48 UTC
Please let us know if you can perform the action requested in comment #10.