lmsensors: settings gone after reboot

l1zard · May 19, 2011, 7:06pm

hi all,

i just setup the sensors to use with conky. I do this by issuing the following:


sensors-detect

and


chkconfig -l lm_sensors
lm_sensors                0:off  1:off  2:on   3:on   4:off  5:on   6:off

reveals that the daemon is setup to start in the particular runlevel.

however after rebooting the system, the settings are gone and executing


sensors

shows only incorrect values.

my investigation has pointed me to the the problem that sensors is useing /etc/sensors3.conf and not /etc/sysconfig/lm_sensors as it should be.

any suggestions to that?

martin_helm · May 19, 2011, 8:00pm

It uses both files, but can you give an example what the wrong output looks
like, to get an idea.

martin_helm · May 19, 2011, 8:04pm

l1zard wrote:

> however after rebooting the system, the settings are gone and
> executing
>
Sorry, pressed send too early. What do you mean by that, which settings
exactly are gone and from which configuration file?

l1zard · May 20, 2011, 5:27pm

actually this problem also apears when i restart the lm_senosrs with


service lm_sensors restart

After executing sensors-detect i get a sensors output like this:


Core0 Temp0 23 °C
Core0 Temp1 27 °C

Core1 Temp0 24 °C
Core1 Temp1 26 °C

When i restart the sensors daemaon i get a lot of stuff including deivces indicating alarms which i do not own.

i also investigated the problem and put some logfiles:

tail -f /var/log/messages during sensors-detect


May 20 16:40:02 Alucard kernel: [131521.153128] w83627ehf: Found W83627EHG chip at 0x290
May 20 16:43:13 Alucard kernel: [131711.829362] i2c /dev entries driver

lsmod | sort before executing sensors-detect:


Module                  Size  Used by
ata_generic             3015  0 
button                  5497  0 
cbc                     2665  4 
cdrom                  38437  1 sr_mod
cpufreq_conservative    10080  0 
cpufreq_powersave        930  0 
cpufreq_userspace       2631  0 
crc16                   1419  1 ext4
dm_crypt               12912  4 
dm_mod                 76266  22 dm_crypt,dm_snapshot
dm_snapshot            34002  0 
edd                     8752  0 
ext4                  373665  4 
fan                     2575  0 
fat                    52552  1 vfat
forcedeth              53976  0 
fuse                   72011  3 
hwmon_vid               2410  1 w83627ehf
i2c_nforce2             5927  0 
ip6_tables             13404  4 ip6t_LOG,ip6table_raw,ip6table_mangle,ip6table_filter
ip6t_LOG                7940  5 
ip6t_REJECT             4192  3 
ip6table_filter         1375  1 
ip6table_mangle         1636  0 
ip6table_raw            1203  1 
ip_tables              13128  2 iptable_raw,iptable_filter
ipt_LOG                 7845  5 
ipt_REJECT              2200  3 
iptable_filter          1466  1 
iptable_raw             1294  1 
jbd2                   78939  1 ext4
joydev                  9578  0 
k8temp                  3360  0 
linear                  4242  0 
loop                   16396  0 
mperf                   1271  1 powernow_k8
nf_conntrack           75967  5 nf_conntrack_ipv6,xt_NOTRACK,nf_conntrack_netbios_ns,nf_conntrack_ipv4,xt_conntrack
nf_conntrack_ipv4       8584  3 
nf_conntrack_ipv6       8286  3 
nf_conntrack_netbios_ns     1366  0 
nf_defrag_ipv4          1281  1 nf_conntrack_ipv4
nf_defrag_ipv6          9434  1 nf_conntrack_ipv6
nls_cp437               4999  2 
nls_iso8859_1           3329  2 
nvidia               9769840  40 
parport                34550  2 ppdev,parport_pc
parport_pc             33763  0 
pata_amd                9422  1 
pcspkr                  1662  0 
powernow_k8            18979  1 
ppdev                   7883  0 
processor              36507  1 powernow_k8
quota_tree              8596  1 quota_v2
quota_v2                4338  2 
sata_nv                20771  2 
serio_raw               4378  0 
sg                     28446  0 
sha256_generic          9607  8 
snd                    67246  14 snd_pcm_oss,snd_mixer_oss,snd_seq,snd_seq_device,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer
snd_hda_codec          95891  2 snd_hda_codec_realtek,snd_hda_intel
snd_hda_codec_realtek   274527  1 
snd_hda_intel          25104  2 
snd_hwdep               6198  1 snd_hda_codec
snd_mixer_oss          17521  1 snd_pcm_oss
snd_page_alloc          8121  2 snd_hda_intel,snd_pcm
snd_pcm                88841  3 snd_pcm_oss,snd_hda_intel,snd_hda_codec
snd_pcm_oss            48271  0 
snd_seq                57777  0 
snd_seq_device          6678  1 snd_seq
snd_timer              22055  2 snd_seq,snd_pcm
soundcore               7270  1 snd
sr_mod                 15048  0 
thermal                13154  0 
thermal_sys            14790  3 fan,processor,thermal
vfat                   10644  2 
w83627ehf              21920  0 
x_tables               18727  16 ip6t_LOG,xt_tcpudp,xt_pkttype,ipt_LOG,xt_limit,ip6t_REJECT,ip6table_raw,xt_NOTRACK,ipt_REJECT,iptable_raw,iptable_filter,ip6table_mangle,ip_tables,xt_conntrack,ip6table_filter,ip6_tables
xt_NOTRACK               864  4 
xt_conntrack            2480  6 
xt_limit                1753  10 
xt_pkttype               960  3 
xt_tcpudp               3052  2

logfile after i executed sensors-detect:


odule                  Size  Used by
ata_generic             3015  0 
button                  5497  0 
cbc                     2665  4 
cdrom                  38437  1 sr_mod
cpufreq_conservative    10080  0 
cpufreq_powersave        930  0 
cpufreq_userspace       2631  0 
crc16                   1419  1 ext4
dm_crypt               12912  4 
dm_mod                 76266  22 dm_crypt,dm_snapshot
dm_snapshot            34002  0 
edd                     8752  0 
ext4                  373665  4 
fan                     2575  0 
fat                    52552  1 vfat
forcedeth              53976  0 
fuse                   72011  3 
i2c_nforce2             5927  0 
ip6_tables             13404  4 ip6t_LOG,ip6table_raw,ip6table_mangle,ip6table_filter
ip6t_LOG                7940  5 
ip6t_REJECT             4192  3 
ip6table_filter         1375  1 
ip6table_mangle         1636  0 
ip6table_raw            1203  1 
ip_tables              13128  2 iptable_raw,iptable_filter
ipt_LOG                 7845  5 
ipt_REJECT              2200  3 
iptable_filter          1466  1 
iptable_raw             1294  1 
jbd2                   78939  1 ext4
joydev                  9578  0 
k8temp                  3360  0 
linear                  4242  0 
loop                   16396  0 
mperf                   1271  1 powernow_k8
nf_conntrack           75967  5 nf_conntrack_ipv6,xt_NOTRACK,nf_conntrack_netbios_ns,nf_conntrack_ipv4,xt_conntrack
nf_conntrack_ipv4       8584  3 
nf_conntrack_ipv6       8286  3 
nf_conntrack_netbios_ns     1366  0 
nf_defrag_ipv4          1281  1 nf_conntrack_ipv4
nf_defrag_ipv6          9434  1 nf_conntrack_ipv6
nls_cp437               4999  2 
nls_iso8859_1           3329  2 
nvidia               9769840  40 
parport                34550  2 ppdev,parport_pc
parport_pc             33763  0 
pata_amd                9422  1 
pcspkr                  1662  0 
powernow_k8            18979  1 
ppdev                   7883  0 
processor              36507  1 powernow_k8
quota_tree              8596  1 quota_v2
quota_v2                4338  2 
sata_nv                20771  2 
serio_raw               4378  0 
sg                     28446  0 
sha256_generic          9607  8 
snd                    67246  14 snd_pcm_oss,snd_mixer_oss,snd_seq,snd_seq_device,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer
snd_hda_codec          95891  2 snd_hda_codec_realtek,snd_hda_intel
snd_hda_codec_realtek   274527  1 
snd_hda_intel          25104  2 
snd_hwdep               6198  1 snd_hda_codec
snd_mixer_oss          17521  1 snd_pcm_oss
snd_page_alloc          8121  2 snd_hda_intel,snd_pcm
snd_pcm                88841  3 snd_pcm_oss,snd_hda_intel,snd_hda_codec
snd_pcm_oss            48271  0 
snd_seq                57777  0 
snd_seq_device          6678  1 snd_seq
snd_timer              22055  2 snd_seq,snd_pcm
soundcore               7270  1 snd
sr_mod                 15048  0 
thermal                13154  0 
thermal_sys            14790  3 fan,processor,thermal
vfat                   10644  2 
x_tables               18727  16 ip6t_LOG,xt_tcpudp,xt_pkttype,ipt_LOG,xt_limit,ip6t_REJECT,ip6table_raw,xt_NOTRACK,ipt_REJECT,iptable_raw,iptable_filter,ip6table_mangle,ip_tables,xt_conntrack,ip6table_filter,ip6_tables
xt_NOTRACK               864  4 
xt_conntrack            2480  6 
xt_limit                1753  10 
xt_pkttype               960  3 
xt_tcpudp               3052  2

diff between logfile_before logfile_after:


19d18
< hwmon_vid               2410  1 w83627ehf
77d75
< w83627ehf              21920  0

this looks to me like sensors-detect unloads modules while the daemon loads them again. My suspicion gets hardened by the fact that the init script does in fact load modules.

My /etc/sysconfig/lm_sensors file looks like this:


# Generated by sensors-detect on Fri May 20 02:27:35 2011
## Path: Hardware/Sensors
## Description:         Defines the modules to used
## Type:                string
## ServiceRestart:      lm_sensors
## Default:             ""
#
# This file is sourced by /etc/init.d/lm_sensors and defines the modules to
# be loaded/unloaded.
#
# The format of this file is a shell script that simply defines variables:
# HWMON_MODULES for hardware monitoring driver modules, and optionally
# BUS_MODULES for any required bus driver module (for example for I2C or SPI).

HWMON_MODULES="w83627ehf"

# For compatibility reasons, modules are also listed individually as variables
#    MODULE_0, MODULE_1, MODULE_2, etc.
# You should use BUS_MODULES and HWMON_MODULES instead if possible.

MODULE_0=w83627ehf

changing the /etc/sensors3.conf seems to have no effect add all. even if i pipe


:> /etc/sensors3.conf

the effect stays the same.

venzkep · May 21, 2011, 2:29am

On Thu May 19 2011 12:36 pm, l1zard wrote:

>
> hi all,
>
> i just setup the sensors to use with conky. I do this by issuing the
> following:
>
> Code:
> --------------------
>
> sensors-detect
>
> --------------------
>
>
> and
>
> Code:
> --------------------
>
> chkconfig -l lm_sensors
> lm_sensors 0:off 1:off 2:on 3:on 4:off 5:on 6:off
>
> --------------------
>
>
> reveals that the daemon is setup to start in the particular runlevel.
>
> however after rebooting the system, the settings are gone and
> executing
>
>
> Code:
> --------------------
>
> sensors
>
> --------------------
>
>
> shows only incorrect values.
>
> my investigation has pointed me to the the problem that sensors is
> useing /etc/sensors3.conf and not /etc/sysconfig/lm_sensors as it should
> be.
>
> any suggestions to that?
>
>
l1zard;

From man sensors.conf

The system-wide libsensors(3) configuration file. /etc/sensors3.conf is tried
first, and if it doesn’t exist, /etc/sensors.conf is used instead.

If you look at the contents of /etc/sensors3.conf you will find a link for
more board specific files.
http://www.lm-sensors.org/wiki/Configurations

I found that I originally needed to edit the contents of sensors3.conf to get
the correct values, but it looks like there is now a listing for my MB at the
above site. (This machine started with 11.2 and was upgraded to 11.4.)

–
P. V.
“We’re all in this together, I’m pulling for you.” Red Green

l1zard · June 6, 2011, 8:08pm

post didn’t help
anybody who know what this is all about.