How do I control CPU fan?

English Hardware
#1

I’ve done quite a bit of searching on this. My CPU fan is running at full speed all the time. This is an HTPC, so sound is a major concern. I see lots of people with specific questions about making fancontrol do what they want it to do, but I don’t find any how-to to get it running from zero on OpenSUSE.

My motherboard is an old Asus A8N-SLI Deluxe (nForce4 chipset)
I’ve installed the sensors package and run sensors-detect.
At the least, I’d like help on what to do from here. At best, It would be great if somebody could give full instructions on how to get fan control on OpenSUSE.

#2

On Mon 17 Mar 2014 04:06:01 PM CDT, Yippee38 wrote:

I’ve done quite a bit of searching on this. My CPU fan is running at
full speed all the time. This is an HTPC, so sound is a major concern.
I see lots of people with specific questions about making fancontrol do
what they want it to do, but I don’t find any how-to to get it running
from zero on OpenSUSE.

My motherboard is an old Asus A8N-SLI Deluxe (nForce4 chipset)
I’ve installed the sensors package and run sensors-detect.
At the least, I’d like help on what to do from here. At best, It would
be great if somebody could give full instructions on how to get fan
control on OpenSUSE.

Hi
Make sure Cool’n’Quiet is enabled in the BIOS… I have a similar M/B;


dmidecode -t baseboard

Base Board Information
Manufacturer: ASUSTeK Computer INC.
Product Name: A8N-SLI Premium

sensors

acpitz-virtual-0
Adapter: Virtual device
temp1:        +40.0°C  (crit = +75.0°C)

k8temp-pci-00c3
Adapter: PCI adapter
PCIE Core0:   +21.0°C
PCIE Core1:   +28.0°C

atk0110-acpi-0
Adapter: ACPI interface
VCore Voltage:         +1.10 V  (min =  +1.45 V, max =  +1.75 V)
+3.3 Voltage:         +3.31 V  (min =  +3.00 V, max =  +3.60 V)
+5.0 Voltage:         +5.05 V  (min =  +4.50 V, max =  +5.50 V)
+12.0 Voltage:        +11.90 V  (min = +11.20 V, max = +13.20 V)
CPU FAN Speed:        2311 RPM  (min =    0 RPM)
REAR CASE FAN Speed:  1854 RPM  (min =    0 RPM)
FRONT CASE FAN Speed: 1896 RPM  (min =    0 RPM)
CPU Temperature:       +27.0°C  (high = +90.0°C, crit = +125.0°C)
MB Temperature:        +32.0°C  (high = +70.0°C, crit = +125.0°C)

–
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE 13.1 (Bottle) (x86_64) GNOME 3.10.1 Kernel 3.11.10-7-desktop
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#3

It is. It’s running 100% though.

#4

On Mon 17 Mar 2014 06:36:02 PM CDT, Yippee38 wrote:

malcolmlewis;2630991 Wrote:
> Hi
> Make sure Cool’n’Quiet is enabled in the BIOS… I have a similar
> M/B;
>

It is. It’s running 100% though.

Hi
So what about the setting of the cpu frequency;


cpufreq-info

–
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE 13.1 (Bottle) (x86_64) GNOME 3.10.1 Kernel 3.11.10-7-desktop
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#5

Here’s what I got:

cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to http://bugs.opensuse.org, please.
analyzing CPU 0:
  no or unknown cpufreq driver is active on this CPU
  maximum transition latency: 4294.55 ms.
analyzing CPU 1:
  no or unknown cpufreq driver is active on this CPU
  maximum transition latency: 4294.55 ms.
#6

On Mon 17 Mar 2014 07:46:01 PM CDT, Yippee38 wrote:

malcolmlewis;2631033 Wrote:
> Hi
> So what about the setting of the cpu frequency;
> >
Code:

> >
> cpufreq-info
>

> >

Here’s what I got:

Code:

cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to http://bugs.opensuse.org, please.
analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU
maximum transition latency: 4294.55 ms.
analyzing CPU 1:
no or unknown cpufreq driver is active on this CPU
maximum transition latency: 4294.55 ms.

Hi
So what CPU on the system? If AMD, is the powernow-k8 module loaded?

–
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE 13.1 (Bottle) (x86_64) GNOME 3.10.1 Kernel 3.11.10-7-desktop
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#7

I don’t even think it’s installed. I searched the software management thing for K8 and it found nothing.

#8

On Mon 17 Mar 2014 08:16:01 PM CDT, Yippee38 wrote:

malcolmlewis;2631049 Wrote:
> Hi
> So what CPU on the system? If AMD, is the powernow-k8 module loaded?

I don’t even think it’s installed. I searched the software management
thing for K8 and it found nothing.

Hi
It’s a kernel module;


su -
modprobe powernow-k8
exit
cpupower frequency-info

What CPU are you running?

–
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE 13.1 (Bottle) (x86_64) GNOME 3.10.1 Kernel 3.11.10-7-desktop
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#9

AMD Opteron 180

#10

Hi
OK, then the module should work to set the frequency and should spin down the fan some.

#11

The modprobe powernow-k8 command gave me this:

FATAL: Error inserting powernow_k8 (/lib/modules/3.11.10-7-desktop/kernel/drivers/cpufreq/powernow-k8.ko): No such device

The cpupower frequency-info command gave me this:

If 'cpupower' is not a typo you can use command-not-found to lookup the package that contains it, like this:
    cnf cpupower

So if I can get this to work, I’m basically underclocking my CPU to reduce heat and therefore to slow the fan? Is that what this does?

#12

On Tue 18 Mar 2014 12:06:01 AM CDT, Yippee38 wrote:

malcolmlewis;2631060 Wrote:
>
> >
Code:

> >
> su -
> modprobe powernow-k8
> exit
> cpupower frequency-info
>

> >

The modprobe powernow-k8 command gave me this:

Code:

FATAL: Error inserting powernow_k8
(/lib/modules/3.11.10-7-desktop/kernel/drivers/cpufreq/powernow-k8.ko):
No such device --------------------

The cpupower frequency-info command gave me this:

Code:

If ‘cpupower’ is not a typo you can use command-not-found to lookup
the package that contains it, like this: cnf cpupower

So if I can get this to work, I’m basically underclocking my CPU to
reduce heat and therefore to slow the fan? Is that what this does?

Hi
Basically, yes dependent on system load

Well that module is the ‘AMD Athlon 64 and Opteron processor
frequency driver’

Can you provide a list of the active kernel modules;


lsmod

You haven’t got any acpi settings running in the grub command?

–
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE 13.1 (Bottle) (x86_64) GNOME 3.10.1 Kernel 3.11.10-7-desktop
If you find this post helpful and are logged into the web interface,
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#13

[QUOTE=malcolmlewis;2631092]Can you provide a list of the active kernel modules;


lsmod


Module                  Size  Used by
lp                     17759  0 
parport_pc             37278  0 
ppdev                  17671  0 
parport                46360  3 lp,parport_pc,ppdev
st                     44415  0 
btrfs                 913865  0 
raid6_pq              106004  1 btrfs
zlib_deflate           26914  1 btrfs
xor                    21411  1 btrfs
ufs                    83041  0 
qnx4                   13317  0 
hfsplus               106859  0 
hfs                    58773  0 
minix                  36095  0 
vfat                   17411  0 
msdos                  17332  0 
fat                    65905  2 vfat,msdos
jfs                   193489  0 
reiserfs              258859  0 
bnep                   19704  2 
bluetooth             396742  5 bnep
rfkill                 26487  4 bluetooth
fuse                   95850  2 
xt_tcpudp              12884  2 
xt_pkttype             12504  3 
xt_LOG                 17718  10 
xt_limit               12711  10 
af_packet              39774  2 
ip6t_REJECT            12939  3 
nf_conntrack_ipv6      18938  3 
nf_defrag_ipv6         34645  1 nf_conntrack_ipv6
ip6table_raw           12683  1 
ipt_REJECT             12541  3 
iptable_raw            12678  1 
xt_CT                  12956  4 
iptable_filter         12810  1 
ip6table_mangle        12700  0 
nf_conntrack_netbios_ns    12665  0 
nf_conntrack_broadcast    12589  1 nf_conntrack_netbios_ns
nf_conntrack_ipv4      15012  3 
nf_defrag_ipv4         12729  1 nf_conntrack_ipv4
ip_tables              27239  2 iptable_raw,iptable_filter
xt_conntrack           12760  6 
nf_conntrack          105228  6 nf_conntrack_ipv6,xt_CT,nf_conntrack_netbios_ns,nf_conntrack_broadcast,nf_conntrack_ipv4,xt_conntrack
ip6table_filter        12815  1 
ip6_tables             27025  3 ip6table_raw,ip6table_mangle,ip6table_filter
x_tables               34059  15 xt_tcpudp,xt_pkttype,xt_LOG,xt_limit,ip6t_REJECT,ip6table_raw,ipt_REJECT,iptable_raw,xt_CT,iptable_filter,ip6table_mangle,ip_tables,xt_conntrack,ip6table_filter,ip6_tables
xfs                   983087  1 
libcrc32c              12644  2 btrfs,xfs
nvidia              10679345  39 
snd_hda_codec_hdmi     45213  4 
snd_hda_intel          48171  2 
snd_hda_codec         205080  2 snd_hda_codec_hdmi,snd_hda_intel
snd_hwdep              13602  1 snd_hda_codec
snd_pcm               110211  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq                69752  0 
snd_timer              29423  2 snd_pcm,snd_seq
snd_seq_device         14497  1 snd_seq
snd                    87417  12 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq,snd_timer,snd_seq_device
drm                   313440  2 nvidia
soundcore              15047  1 snd
snd_page_alloc         18710  2 snd_hda_intel,snd_pcm
pcspkr                 12718  0 
serio_raw              13413  0 
mperf                  12667  0 
k8temp                 12978  0 
edac_core              62342  0 
edac_mce_amd           22617  0 
usb_storage            62062  0 
joydev                 17332  0 
ftdi_sio               53201  0 
usbserial              44667  1 ftdi_sio
sr_mod                 22411  0 
cdrom                  46652  1 sr_mod
shpchp                 32936  0 
forcedeth              71556  0 
ata_generic            12910  0 
pata_amd               18225  0 
i2c_nforce2            13221  0 
asus_atk0110           18657  0 
button                 13952  0 
sg                     40629  0 
dm_mod                 92428  18 
autofs4                42770  2 
hid_logitech_dj        18581  0 
thermal                18754  0 
fan                    13002  0 
processor              44641  0 
thermal_sys            36646  3 thermal,fan,processor
ohci_pci               13561  0 
sata_nv                31841  5 
scsi_dh_hp_sw          12895  0 
scsi_dh_alua           17295  0 
scsi_dh_rdac           17447  0 
scsi_dh_emc            17258  0 
scsi_dh                14882  4 scsi_dh_hp_sw,scsi_dh_alua,scsi_dh_rdac,scsi_dh_emc

You haven’t got any acpi settings running in the grub command?

Correct. I don’t know what command to use.

#14

On Tue 18 Mar 2014 04:46:01 AM CDT, Yippee38 wrote:

malcolmlewis;2631092 Wrote:
> Can you provide a list of the active kernel modules;
> >
Code:

> >
> lsmod
>

> >
>
> >
Code:

> > Module Size Used by
> lp 17759 0
> parport_pc 37278 0
> ppdev 17671 0
> parport 46360 3 lp,parport_pc,ppdev
> st 44415 0
> btrfs 913865 0
> raid6_pq 106004 1 btrfs
> zlib_deflate 26914 1 btrfs
> xor 21411 1 btrfs
> ufs 83041 0
> qnx4 13317 0
> hfsplus 106859 0
> hfs 58773 0
> minix 36095 0
> vfat 17411 0
> msdos 17332 0
> fat 65905 2 vfat,msdos
> jfs 193489 0
> reiserfs 258859 0
> bnep 19704 2
> bluetooth 396742 5 bnep
> rfkill 26487 4 bluetooth
> fuse 95850 2
> xt_tcpudp 12884 2
> xt_pkttype 12504 3
> xt_LOG 17718 10
> xt_limit 12711 10
> af_packet 39774 2
> ip6t_REJECT 12939 3
> nf_conntrack_ipv6 18938 3
> nf_defrag_ipv6 34645 1 nf_conntrack_ipv6
> ip6table_raw 12683 1
> ipt_REJECT 12541 3
> iptable_raw 12678 1
> xt_CT 12956 4
> iptable_filter 12810 1
> ip6table_mangle 12700 0
> nf_conntrack_netbios_ns 12665 0
> nf_conntrack_broadcast 12589 1 nf_conntrack_netbios_ns
> nf_conntrack_ipv4 15012 3
> nf_defrag_ipv4 12729 1 nf_conntrack_ipv4
> ip_tables 27239 2 iptable_raw,iptable_filter
> xt_conntrack 12760 6
> nf_conntrack 105228 6
nf_conntrack_ipv6,xt_CT,nf_conntrack_netbios_ns,nf_conntrack_broadcast,nf_conntrack_ipv4,xt_conntrack
> ip6table_filter 12815 1 > ip6_tables 27025 3
> ip6table_raw,ip6table_mangle,ip6table_filter
> x_tables 34059 15
xt_tcpudp,xt_pkttype,xt_LOG,xt_limit,ip6t_REJECT,ip6table_raw,ipt_REJECT,iptable_raw,xt_CT,iptable_filter,ip6table_mangle,ip_tables,xt_conntrack,ip6table_filter,ip6_tables
> xfs 983087 1 > libcrc32c 12644 2
> btrfs,xfs
> nvidia 10679345 39
> snd_hda_codec_hdmi 45213 4
> snd_hda_intel 48171 2
> snd_hda_codec 205080 2 snd_hda_codec_hdmi,snd_hda_intel
> snd_hwdep 13602 1 snd_hda_codec
> snd_pcm 110211 3
snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec > snd_seq
69752 0 > snd_timer 29423 2 snd_pcm,snd_seq
> snd_seq_device 14497 1 snd_seq
> snd 87417 12
snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq,snd_timer,snd_seq_device
> drm 313440 2 nvidia > soundcore
> 15047 1 snd
> snd_page_alloc 18710 2 snd_hda_intel,snd_pcm
> pcspkr 12718 0
> serio_raw 13413 0
> mperf 12667 0
> k8temp 12978 0
> edac_core 62342 0
> edac_mce_amd 22617 0
> usb_storage 62062 0
> joydev 17332 0
> ftdi_sio 53201 0
> usbserial 44667 1 ftdi_sio
> sr_mod 22411 0
> cdrom 46652 1 sr_mod
> shpchp 32936 0
> forcedeth 71556 0
> ata_generic 12910 0
> pata_amd 18225 0
> i2c_nforce2 13221 0
> asus_atk0110 18657 0
> button 13952 0
> sg 40629 0
> dm_mod 92428 18
> autofs4 42770 2
> hid_logitech_dj 18581 0
> thermal 18754 0
> fan 13002 0
> processor 44641 0
> thermal_sys 36646 3 thermal,fan,processor
> ohci_pci 13561 0
> sata_nv 31841 5
> scsi_dh_hp_sw 12895 0
> scsi_dh_alua 17295 0
> scsi_dh_rdac 17447 0
> scsi_dh_emc 17258 0
> scsi_dh 14882 4
scsi_dh_hp_sw,scsi_dh_alua,scsi_dh_rdac,scsi_dh_emc --------------------
> >
>
>
> > > > You haven’t got any acpi settings running in the grub command?>
> > > > >
>
> Correct. I don’t know what command to use.

Hi
I would have to assume the cpu doesn’t support power control. What if
you disable cool n quiet in the BIOS and start the system.

–
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE 13.1 (Bottle) (x86_64) GNOME 3.10.1 Kernel 3.11.10-7-desktop
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#15

I’m an idiot! Quiet ‘n’ Cool was disabled. :embarrassed: It is enabled now. CPU fan is still going strong. Starting from the beginning, here is the new info…

cpufreq-info:

:~> cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to http://bugs.opensuse.org, please.
analyzing CPU 0:
  driver: powernow-k8
  CPUs which run at the same hardware frequency: 0 1
  CPUs which need to have their frequency coordinated by software: 0 1
  maximum transition latency: 109 us.
  hardware limits: 1000 MHz - 2.40 GHz
  available frequency steps: 2.40 GHz, 2.20 GHz, 2.00 GHz, 1.80 GHz, 1000 MHz
  available cpufreq governors: ondemand, performance
  current policy: frequency should be within 1000 MHz and 2.40 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 1000 MHz.
analyzing CPU 1:
  driver: powernow-k8
  CPUs which run at the same hardware frequency: 0 1
  CPUs which need to have their frequency coordinated by software: 0 1
  maximum transition latency: 109 us.
  hardware limits: 1000 MHz - 2.40 GHz
  available frequency steps: 2.40 GHz, 2.20 GHz, 2.00 GHz, 1.80 GHz, 1000 MHz
  available cpufreq governors: ondemand, performance
  current policy: frequency should be within 1000 MHz and 2.40 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 1000 MHz.

Running modprobe powernow-k8 as SU results in no output (success, I assume). Running cpupower frequency-info still results in:

~> cpupower frequency-info
If 'cpupower' is not a typo you can use command-not-found to lookup the package that contains it, like this:
    cnf cpupower

lsmod:

~> lsmod
Module                  Size  Used by
bnep                   19704  2 
bluetooth             396742  5 bnep
rfkill                 26487  4 bluetooth
fuse                   95850  3 
xt_tcpudp              12884  2 
xt_pkttype             12504  3 
xt_LOG                 17718  10 
xt_limit               12711  10 
af_packet              39774  2 
ip6t_REJECT            12939  3 
nf_conntrack_ipv6      18938  3 
nf_defrag_ipv6         34645  1 nf_conntrack_ipv6
ip6table_raw           12683  1 
ipt_REJECT             12541  3 
iptable_raw            12678  1 
xt_CT                  12956  4 
iptable_filter         12810  1 
ip6table_mangle        12700  0 
nf_conntrack_netbios_ns    12665  0 
nf_conntrack_broadcast    12589  1 nf_conntrack_netbios_ns
nf_conntrack_ipv4      15012  3 
nf_defrag_ipv4         12729  1 nf_conntrack_ipv4
ip_tables              27239  2 iptable_raw,iptable_filter
xt_conntrack           12760  6 
nf_conntrack          105228  6 nf_conntrack_ipv6,xt_CT,nf_conntrack_netbios_ns,nf_conntrack_broadcast,nf_conntrack_ipv4,xt_conntrack
ip6table_filter        12815  1 
ip6_tables             27025  3 ip6table_raw,ip6table_mangle,ip6table_filter
x_tables               34059  15 xt_tcpudp,xt_pkttype,xt_LOG,xt_limit,ip6t_REJECT,ip6table_raw,ipt_REJECT,iptable_raw,xt_CT,iptable_filter,ip6table_mangle,ip_tables,xt_conntrack,ip6table_filter,ip6_tables
xfs                   983087  1 
libcrc32c              12644  1 xfs
nvidia              10696996  39 
snd_hda_codec_hdmi     45213  4 
powernow_k8            28360  1 
pcspkr                 12718  0 
serio_raw              13413  0 
joydev                 17332  0 
ftdi_sio               53201  0 
usbserial              44667  1 ftdi_sio
usb_storage            62062  0 
edac_core              62342  0 
k8temp                 12978  0 
edac_mce_amd           22617  0 
snd_hda_intel          48171  2 
snd_hda_codec         205080  2 snd_hda_codec_hdmi,snd_hda_intel
snd_hwdep              13602  1 snd_hda_codec
snd_pcm               110211  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq                69752  0 
snd_timer              29423  2 snd_pcm,snd_seq
snd_seq_device         14497  1 snd_seq
snd                    87417  12 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq,snd_timer,snd_seq_device
soundcore              15047  1 snd
snd_page_alloc         18710  2 snd_hda_intel,snd_pcm
drm                   313440  2 nvidia
sr_mod                 22411  0 
cdrom                  46652  1 sr_mod
pata_amd               18225  0 
forcedeth              71556  0 
i2c_nforce2            13221  0 
ata_generic            12910  0 
shpchp                 32936  0 
asus_atk0110           18657  0 
button                 13952  0 
mperf                  12667  0 
sg                     40629  0 
dm_mod                 92428  18 
autofs4                42770  2 
hid_logitech_dj        18581  0 
thermal                18754  0 
fan                    13002  0 
processor              44641  1 powernow_k8
thermal_sys            36646  3 thermal,fan,processor
ohci_pci               13561  0 
sata_nv                31841  5 
scsi_dh_hp_sw          12895  0 
scsi_dh_alua           17295  0 
scsi_dh_rdac           17447  0 
scsi_dh_emc            17258  0 
scsi_dh                14882  4 scsi_dh_hp_sw,scsi_dh_alua,scsi_dh_rdac,scsi_dh_emc

What acpi command should I be running in grub? What else do I need to do to get fan control?

#16

BTW, sensors-detect gives this result as detected sensors:

Driver `k8temp' (autoloaded):
  * Chip `AMD K8 thermal sensors' (confidence: 9)

Driver `it87':
  * ISA bus, address 0x290
    Chip `ITE IT8712F Super IO Sensors' (confidence: 9)

When I try to run fancontrol, I get:

Loading configuration from /etc/fancontrol ...
Error: Can't read configuration file

I assume that means that if I manually create a config file, fanctrol will be able to use it. Is that true? if so, I’d also have a set fancontrol up to run automagically. Correct?

#17

On Thu 20 Mar 2014 09:16:02 PM CDT, Yippee38 wrote:

BTW, sensors-detect gives this result as detected sensors:

Code:

Driver `k8temp’ (autoloaded):

  • Chip `AMD K8 thermal sensors’ (confidence: 9)

Driver `it87’:

  • ISA bus, address 0x290
    Chip `ITE IT8712F Super IO Sensors’ (confidence: 9)

When I try to run fancontrol, I get:

Code:

Loading configuration from /etc/fancontrol …
Error: Can’t read configuration file

I assume that means that if I manually create a config file, fanctrol
will be able to use it. Is that true? if so, I’d also have a set
fancontrol up to run automagically. Correct?

Hi
I’ve never used fancontrol :frowning: On the system with the ASUS board the
case and power supply fans have built in sensors and adjust their speed,
cpu one I’ve never worried about… the Nvidia GPU is a fanless one.

–
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE 13.1 (Bottle) (x86_64) GNOME 3.10.1 Kernel 3.11.10-7-desktop
If you find this post helpful and are logged into the web interface,
please show your appreciation and click on the star below… Thanks!

#18

Is there some acpi code I need to add to the grub startup menu item to make this work?

#19

Hi
Do you see the fans and RPM in the sensors output?

Did you try (as root user) running the command pwmconfig?

#20 
~> sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +40.0°C  (crit = +75.0°C)

atk0110-acpi-0
Adapter: ACPI interface
Vcore Voltage:      +1.20 V  (min =  +1.45 V, max =  +1.75 V)
 +3.3 Voltage:      +3.26 V  (min =  +3.00 V, max =  +3.60 V)
 +5.0 Voltage:      +4.95 V  (min =  +4.50 V, max =  +5.50 V)
+12.0 Voltage:     +11.84 V  (min = +11.20 V, max = +13.20 V)
CPU FAN Speed:        0 RPM  (min =    0 RPM, max = 1800 RPM)
CHASSIS FAN Speed:    0 RPM  (min =    0 RPM, max = 1800 RPM)
CHIPSET FAN Speed:    0 RPM  (min =    0 RPM, max = 1800 RPM)
CPU Temperature:    +29.0°C  (high = +90.0°C, crit = +125.0°C)
MB Temperature:     +38.0°C  (high = +70.0°C, crit = +125.0°C)

k8temp-pci-00c3
Adapter: PCI adapter
Core0 Temp:   +35.0°C  
Core1 Temp:   +33.0°C

Did you try (as root user) running the command pwmconfig?

# pwmconfig revision 6166 (2013-05-01)
This program will search your sensors for pulse width modulation (pwm)
controls, and test each one to see if it controls a fan on
your motherboard. Note that many motherboards do not have pwm
circuitry installed, even if your sensor chip supports pwm.

We will attempt to briefly stop each fan using the pwm controls.
The program will attempt to restore each fan to full speed
after testing. However, it is ** very important ** that you
physically verify that the fans have been to full speed
after the program has completed.

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