| View previous topic :: View next topic |
| Author |
Message |
queen
Veteran
Joined: 19 Jul 2005
Posts: 1642
|
 Posted: Wed Jun 27, 2007 1:34 pm Post subject: [SOLVED] fan works all the time |
 |
|
I have a fujitsu siemens amilo pro v2020 and the fan works all the time. I tried both with enabled fan and disabled in the kernel. I even bought a cooler pad. The cooler pad works fine, yet the laptop fan still continues to spin. There is no option to change anything regarding fan in the bios.
Here is some output | Code: |
carin ~ # cat /proc/acpi/thermal_zone/THRM/state
state: ok
carin ~ # cat /proc/acpi/thermal_zone/THRM/temperature
temperature: 11 C
carin ~ # cat /proc/acpi/thermal_zone/THRM/cooling_mode
<setting not supported>
cooling mode: critical
carin ~ # cat /proc/acpi/thermal_zone/THRM/polling_frequency
<polling disabled>
carin ~ # cat /proc/acpi/thermal_zone/THRM/trip_points
critical (S5): 100 C
|
What can be wrong?
Since the cooling pad works the fan shouldn't.
Last edited by queen on Thu Jun 28, 2007 9:34 am; edited 1 time in total |
|
| Back to top |
|
 |
toralf
Developer
Joined: 01 Feb 2004
Posts: 3943
Location: Hamburg
|
| Posted: Wed Jun 27, 2007 2:29 pm Post subject: |
|
|
| Probably you're looking for kernel option CONFIG_CPU_FREQ_GOV_ONDEMAND |
|
| Back to top |
|
|
queen
Veteran
Joined: 19 Jul 2005
Posts: 1642
|
| Posted: Wed Jun 27, 2007 2:37 pm Post subject: |
|
|
| toralf wrote: | | Probably you're looking for kernel option CONFIG_CPU_FREQ_GOV_ONDEMAND |
I have it enabled | Code: | grep CONFIG_CPU_FREQ_GOV_ONDEMAND /usr/src/linux/.config
CONFIG_CPU_FREQ_GOV_ONDEMAND=y |
and here are the i2c settings in the kernel:
| Code: | grep -i i2c /usr/src/linux/.config
# I2C support
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
# I2C Algorithms
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_ALGOPCF=y
CONFIG_I2C_ALGOPCA=y
# I2C Hardware Bus support
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
# CONFIG_I2C_AMD756 is not set
# CONFIG_I2C_AMD8111 is not set
CONFIG_I2C_I801=y
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_PIIX4 is not set
CONFIG_I2C_ISA=m
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PROSAVAGE is not set
# CONFIG_I2C_SAVAGE4 is not set
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
CONFIG_I2C_STUB is not set
# CONFIG_I2C_VIA is not set
# CONFIG_I2C_VIAPRO is not set
# CONFIG_I2C_VOODOO3 is not set
# CONFIG_I2C_PCA_ISA is not set
# Miscellaneous I2C Chip support
CONFIG_I2C_DEBUG_CORE=y
CONFIG_I2C_DEBUG_ALGO=y
CONFIG_I2C_DEBUG_BUS=y
CONFIG_I2C_DEBUG_CHIP=y
CONFIG_FB_INTEL_I2C=y
|
|
|
| Back to top |
|
|
toralf
Developer
Joined: 01 Feb 2004
Posts: 3943
Location: Hamburg
|
| Posted: Wed Jun 27, 2007 3:00 pm Post subject: |
|
|
Ok, and the governor is activated (I do it in /etc/conf.d/local.start) : | Code: | tfoerste@n22 ~/workspace/misc $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
ondemand
|
|
|
| Back to top |
|
|
padoor
Advocate
Joined: 30 Dec 2005
Posts: 4185
Location: india
|
| Posted: Wed Jun 27, 2007 3:12 pm Post subject: |
|
|
i dont think the fan ever stops alltogether
the governer changes its speed with temperature of cpu/system proportionately.
check the cpu load if it continuously runs at max speed. it has auto control within the fan driver.
_________________
reach out a little bit more to catch it (DON'T BELIEVE the advocate part under my user name) |
|
| Back to top |
|
|
toralf
Developer
Joined: 01 Feb 2004
Posts: 3943
Location: Hamburg
|
| Posted: Wed Jun 27, 2007 3:17 pm Post subject: |
|
|
| padoor wrote: | i dont think the fan ever stops alltogether
the governer changes its speed with temperature of cpu/system proportionately.
check the cpu load if it continuously runs at max speed. it has auto control within the fan driver. |
Right, and b/c without any load the cpu Mhz are decreased, its temparture decreases and thereby the fan speed. Iwould never directly manipulate the fan speed, b/c it _has_ obviuously a reason to run at high speed. |
|
| Back to top |
|
|
queen
Veteran
Joined: 19 Jul 2005
Posts: 1642
|
| Posted: Wed Jun 27, 2007 7:21 pm Post subject: |
|
|
| toralf wrote: | Ok, and the governor is activated (I do it in /etc/conf.d/local.start) : | Code: | tfoerste@n22 ~/workspace/misc $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
ondemand
|
|
my results are cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor performance
can i put in /etc/conf.d/local.start ondemand? or it's fixed by what the laptop selects?
I changed in /etc/conf.d/local.start to ondemand.
Last edited by queen on Wed Jun 27, 2007 7:33 pm; edited 1 time in total |
|
| Back to top |
|
|
queen
Veteran
Joined: 19 Jul 2005
Posts: 1642
|
| Posted: Wed Jun 27, 2007 7:30 pm Post subject: |
|
|
| padoor wrote: | i dont think the fan ever stops alltogether
the governer changes its speed with temperature of cpu/system proportionately.
check the cpu load if it continuously runs at max speed. it has auto control within the fan driver. |
I don't know, but my brother has a hp laptop. Since he put the cooler pad, the fan of the laptop doesn't work anymore, because the pad cools enough. my pad also cools quite well, and the fan of the laptop throws quite a warm air.
| Code: | top
top - 22:28:29 up 7:55, 1 user, load average: 0.04, 0.08, 0.08
Tasks: 96 total, 3 running, 93 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.3%us, 0.0%sy, 0.7%ni, 99.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 1015940k total, 995472k used, 20468k free, 85396k buffers
Swap: 1984016k total, 768k used, 1983248k free, 607528k cached
|
|
|
| Back to top |
|
|
toralf
Developer
Joined: 01 Feb 2004
Posts: 3943
Location: Hamburg
|
| Posted: Thu Jun 28, 2007 7:25 am Post subject: |
|
|
| Code: | n22 ~ # cd /sys/devices/system/cpu/cpu0/cpufreq
n22 /sys/devices/system/cpu/cpu0/cpufreq # echo ondemand > scaling_governor |
|
|
| Back to top |
|
|
queen
Veteran
Joined: 19 Jul 2005
Posts: 1642
|
| Posted: Thu Jun 28, 2007 9:34 am Post subject: |
|
|
| toralf wrote: | | Code: | n22 ~ # cd /sys/devices/system/cpu/cpu0/cpufreq
n22 /sys/devices/system/cpu/cpu0/cpufreq # echo ondemand > scaling_governor |
|
That did the trick. 
It works on and off even without the cooler pad.  |
|
| Back to top |
|
|
|
Kernel & Hardware
