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Fan speed control problem

Hello,
I'm trying to adjust my fan speeds in linux, but pwmconfig fails with:

Code:

/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed

However, I have lm-sensors installed, and working:

Code:

[root@sigma skyer]# sensors

atk0110-acpi-0

Adapter: ACPI interface

Vcore Voltage:        +1.31 V  (min =  +0.85 V, max =  +1.70 V)

 +3.3 Voltage:        +3.35 V  (min =  +2.97 V, max =  +3.63 V)

 +5 Voltage:          +5.11 V  (min =  +4.50 V, max =  +5.50 V)

 +12 Voltage:        +12.44 V  (min = +10.20 V, max = +13.80 V)

CPU FAN Speed:        997 RPM  (min =  600 RPM)

CHASSIS FAN Speed:    641 RPM  (min =  600 RPM)

CHASSIS FAN 2 Speed:  421 RPM  (min =  600 RPM)

CPU Temperature:      +30.0°C  (high = +60.0°C, crit = +95.0°C)

MB Temperature:      +37.0°C  (high = +45.0°C, crit = +75.0°C)



k10temp-pci-00c3

Adapter: PCI adapter

temp1:        +0.0°C  (high = +70.0°C)

                      (crit = +90.0°C, hyst = +88.0°C)



radeon-pci-0100

Adapter: PCI adapter

temp1:        +32.0°C

Also, I can read files specifying fan speeds, but can't write to them:

Code:

[root@sigma skyer]# cat /sys/class/hwmon/hwmon0/fan1_input

997

[root@sigma skyer]# echo "800" > /sys/class/hwmon/hwmon0/fan1_input

bash: /sys/class/hwmon/hwmon0/fan1_input: Permission denied

I'm not sure if my motherboard is PWM capable, it's model m4a78t-e from Asus (it has like 2 years).

Thanks,

Skyer

The error message may be caused by the module not being loaded.

Try

Code:

lsmod | grep -E 'coretemp|w83627ehf'

If that gives no output try

Code:

modprobe coretemp

modprobe w83627ehf

If that gives a "No such device" error you will have to re-build the kernel with the w83627ehf module.

There's a known problem with that module and the ACPI address space so if it still doesn't work try adding kernel option acpi_enforce_resources=lax.

If the m4a78t-e is like the P8H67-V, CHA_FAN1 and CHA_FAN2 are controlled by the same PWM port in which case you will need a very recent (development?) version of the fancontrol script that can cope with it.

Before you go worring about stuff like PWM, make sure you have a PWM fan. You could have all 3 pin (non-PWM) fans.

Quote:

Originally Posted by cascade9 (Post 4624600)

Before you go worring about stuff like PWM, make sure you have a PWM fan. You could have all 3 pin (non-PWM) fans.

PWM fans are not necessary in the (not uncommon?) situation where the fan headers are voltage controlled by the superIO chip.

Thank you for replying,

catkin: Those two modprobe commands give me "No such a device". I'm not sure about need for coretemp though, I've googled a little bit and besides the fact that I know very little about this, coretemp seems to be driver for Intel family chips - while I have AMD CPU, and I'm using asus_atk0110 (which is loaded). I'm using Arch linux, and fancontrol is part of lm_sensors, which is up to date.

cascade9: Well this is embarrassing, but I do have 3pin fans, and CPU has 4pins. As I said, I don't know much about this stuff. Is there a way to control those?

Skyer

Quote:

Originally Posted by Skyer (Post 4624703)

catkin: Those two modprobe commands give me "No such a device". I'm not sure about need for coretemp though, I've googled a little bit and besides the fact that I know very little about this, coretemp seems to be driver for Intel family chips - while I have AMD CPU, and I'm using asus_atk0110 (which is loaded). I'm using Arch linux, and fancontrol is part of lm_sensors, which is up to date.

cascade9: Well this is embarrassing, but I do have 3pin fans, and CPU has 4pins. As I said, I don't know much about this stuff. Is there a way to control those?

OK about coretemp.

The asus_atk0110 module was unusable on the P8H67-V. This was confirmed on the lm_sensors mailing list by lm_sensors developer Luca Tettamanti. It looks as if it is not working on your system either.

What sort of Super-I/O chip does sensors-detect find?

3-pin fans can be controlled (on 4-pin headers) on the P8H67-V as they could on my previous Gigabyte motherboard.

From sensors-detect:

Driver `it87':
* ISA bus, address 0x290
Chip `ITE IT8720F Super IO Sensors' (confidence: 9)

Driver `k10temp' (autoloaded):
* Chip `AMD Family 10h thermal sensors' (confidence: 9)

Skyer

What happens if you modprobe it87 and then run pwmconfig?

pwmconfig, as I've mentioned, complains about:

Code:

/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed

Code:

[root@sigma skyer]# modprobe it87

ERROR: could not insert 'it87': Device or resource busy

Going to play with it a little bit...

Skyer

You could try not loading asus_atk0110 and loading it87 ...