[Bug 640675] [NEW] CPU fan always at 100% and noisy

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Hello.

My CPU FAN is always at 100%, even if my CPU usage is near to 0-1%.

For example, now, my CPU work at 4%, the CPU temperature detected is
36°Celsius, but the FAN is always so noisy at 100% !

I don't know if this bug is hardware specific, so I give you my
configuration :

Kubuntu Maverick beta
AMD PHENOM II 1090T (x6)
ASUS CROSSHAIR IV Formula
8GB DDR3

BIOS : Cool'n'Quiet is activated (but i tested with this option off, and
the problem still the same)

Thank You very much

[EDIT]
I found on some forums that it could come from acpi drivers. Some users succeeded to have it working by modifying /etc/default/grub file. They had to add this line :

GRUB_CMDLINE_LINUX="acpi_enforce_resources=lax"

For me it didn't work. When I rebooted, it was not better, and I got some KDE errors, and Wifi didn't work anymore.
So, I removed this line.

I give you the result from sensors command :
*******************************************************************************************************************
mathojojo at mathojojo-pc:~$ sensors
k10temp-pci-00c3
Adapter: PCI adapter
temp1:       +27.4°C  (high = +70.0°C, crit = +90.0°C)  

atk0110-acpi-0
Adapter: ACPI interface
Vcore Voltage:         +1.21 V  (min =  +0.80 V, max =  +1.60 V)
CPU/NB Voltage:        +1.15 V  (min =  +0.80 V, max =  +1.60 V)
CPU VDDA Voltage:      +2.52 V  (min =  +2.00 V, max =  +3.00 V)
DRAM Voltage:          +1.57 V  (min =  +1.40 V, max =  +1.90 V)
HT Voltage:            +1.21 V  (min =  +0.80 V, max =  +1.50 V)
NB Voltage:            +1.11 V  (min =  +0.90 V, max =  +1.35 V)
SB Voltage:            +1.11 V  (min =  +0.80 V, max =  +1.50 V)
+3.3V Voltage:         +3.38 V  (min =  +2.97 V, max =  +3.63 V)
+5V Voltage:           +5.00 V  (min =  +4.50 V, max =  +5.50 V)
+12V Voltage:         +12.11 V  (min = +10.20 V, max = +13.80 V)
CPU Temperature:       +37.0°C  (high = +40.0°C, crit = +90.0°C)  
MB Temperature:        +40.0°C  (high = +35.0°C, crit = +95.0°C)  
NB Temperature:        +47.0°C  (high = +65.0°C, crit = +95.0°C)  
SB Temperature:        +42.0°C  (high = +35.0°C, crit = +75.0°C)  
OPT_TEMP1 Temperature:  +0.0°C  (high =  +0.0°C, crit = +90.0°C)  
OPT_TEMP2 Temperature:  +0.0°C  (high =  +0.0°C, crit = +90.0°C)  
OPT_TEMP3 Temperature:  +0.0°C  (high =  +0.0°C, crit = +90.0°C) 
*************************************************************************************************

What is strange, is that I don't get any Fanspeed information.

And dmesg gave me this information :

[   17.224358] ACPI: resource piix4_smbus [io  0x0b00-0x0b07] conflicts with ACPI region SMRG [io  0x0b00-0x0b2f 64bit pref window]
[   17.224358] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

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CPU fan always at 100% and noisy
https://bugs.launchpad.net/bugs/640675
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