2015/07/19

lm-sensors 入れておく

Ubuntu14.04 on DS57Uに色々構築中だが、ファンレスPCは自分自身初めてなので、これからの猛暑を乗りきれるのか?と不安で。

で、そういえば以前も確認したりしてたなぁと思い出し、lm-sensors入れておこうと思います。

$ sudo apt-get install lm-sensors
$ sudo sensors-detect

の時の表示ログ↓
# sensors-detect revision 6170 (2013-05-20 21:25:22 +0200)
# System: Shuttle Inc. DS57U [V1.0]
# Board: Shuttle Inc. FS57U

This program will help you determine which kernel modules you need
to load to use lm_sensors most effectively. It is generally safe
and recommended to accept the default answers to all questions,
unless you know what you're doing.

Some south bridges, CPUs or memory controllers contain embedded sensors.
Do you want to scan for them? This is totally safe. (YES/no):
Module cpuid loaded successfully.
Silicon Integrated Systems SIS5595...                       No
VIA VT82C686 Integrated Sensors...                          No
VIA VT8231 Integrated Sensors...                            No
AMD K8 thermal sensors...                                   No
AMD Family 10h thermal sensors...                           No
AMD Family 11h thermal sensors...                           No
AMD Family 12h and 14h thermal sensors...                   No
AMD Family 15h thermal sensors...                           No
AMD Family 15h power sensors...                             No
AMD Family 16h power sensors...                             No
Intel digital thermal sensor...                             Success!
    (driver `coretemp')
Intel AMB FB-DIMM thermal sensor...                         No
VIA C7 thermal sensor...                                    No
VIA Nano thermal sensor...                                  No

Some Super I/O chips contain embedded sensors. We have to write to
standard I/O ports to probe them. This is usually safe.
Do you want to scan for Super I/O sensors? (YES/no):
Probing for Super-I/O at 0x2e/0x2f
Trying family `National Semiconductor/ITE'...               No
Trying family `SMSC'...                                     No
Trying family `VIA/Winbond/Nuvoton/Fintek'...               No
Trying family `ITE'...                                      Yes
Found `ITE IT8728F Super IO Sensors'                        Success!
    (address 0xa40, driver `it87')
Probing for Super-I/O at 0x4e/0x4f
Trying family `National Semiconductor/ITE'...               No
Trying family `SMSC'...                                     No
Trying family `VIA/Winbond/Nuvoton/Fintek'...               No
Trying family `ITE'...                                      No

Some systems (mainly servers) implement IPMI, a set of common interfaces
through which system health data may be retrieved, amongst other things.
We first try to get the information from SMBIOS. If we don't find it
there, we have to read from arbitrary I/O ports to probe for such
interfaces. This is normally safe. Do you want to scan for IPMI
interfaces? (YES/no):
Probing for `IPMI BMC KCS' at 0xca0...                      No
Probing for `IPMI BMC SMIC' at 0xca8...                     No

Some hardware monitoring chips are accessible through the ISA I/O ports.
We have to write to arbitrary I/O ports to probe them. This is usually
safe though. Yes, you do have ISA I/O ports even if you do not have any
ISA slots! Do you want to scan the ISA I/O ports? (yes/NO):

Lastly, we can probe the I2C/SMBus adapters for connected hardware
monitoring devices. This is the most risky part, and while it works
reasonably well on most systems, it has been reported to cause trouble
on some systems.
Do you want to probe the I2C/SMBus adapters now? (YES/no):
Found unknown SMBus adapter 8086:9ca2 at 0000:00:1f.3.
Sorry, no supported PCI bus adapters found.
Module i2c-dev loaded successfully.

Next adapter: i915 gmbus ssc (i2c-0)
Do you want to scan it? (yes/NO/selectively):

Next adapter: i915 gmbus vga (i2c-1)
Do you want to scan it? (yes/NO/selectively):

Next adapter: i915 gmbus panel (i2c-2)
Do you want to scan it? (yes/NO/selectively):

Next adapter: i915 gmbus dpc (i2c-3)
Do you want to scan it? (yes/NO/selectively):

Next adapter: i915 gmbus dpb (i2c-4)
Do you want to scan it? (yes/NO/selectively):

Next adapter: i915 gmbus dpd (i2c-5)
Do you want to scan it? (yes/NO/selectively):

Next adapter: DPDDC-B (i2c-6)
Do you want to scan it? (yes/NO/selectively):

Now follows a summary of the probes I have just done.
Just press ENTER to continue:

Driver `it87':
  * ISA bus, address 0xa40
    Chip `ITE IT8728F Super IO Sensors' (confidence: 9)

Driver `coretemp':
  * Chip `Intel digital thermal sensor' (confidence: 9)

To load everything that is needed, add this to /etc/modules:
#----cut here----
# Chip drivers
coretemp
it87
#----cut here----
If you have some drivers built into your kernel, the list above will
contain too many modules. Skip the appropriate ones!

Do you want to add these lines automatically to /etc/modules? (yes/NO)yes
Successful!

Monitoring programs won't work until the needed modules are
loaded. You may want to run 'service kmod start'
to load them.

Unloading i2c-dev... OK
Unloading cpuid... OK



取得可能な情報は、coretemp(CPU温度)とSuper IOでした。Super I/Oとは、
https://en.wikipedia.org/wiki/Super_I/O によると低速な外部デバイスポートを接続するコントローラの部分でしょうか。とりあえず欲しいのはCPU温度だけなので、coretempさえ取れればいいや。
因みに、/etc/modulesにセンサードライバを記述するのだが、それもsensors-detectさんにやってもらいました。

$ sensors

正午ごろの結果↓
acpitz-virtual-0
Adapter: Virtual device
temp1:        +27.8°C  (crit = +105.0°C)
temp2:        +29.8°C  (crit = +105.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +44.0°C  (high = +105.0°C, crit = +105.0°C)
Core 0:         +42.0°C  (high = +105.0°C, crit = +105.0°C)
Core 1:         +43.0°C  (high = +105.0°C, crit = +105.0°C)


ふむふむ。思ったほど高温でもないような。



CPUの動作周波数は?

$ grep MHz /proc/cpuinfo
 cpu MHz         : 806.718
 cpu MHz         : 799.746
DS57UのCPUは、Celeron 3205U(1.5GHz) なので、こんなもんでしょうねぇ。


無駄記事だったかもしれないけど、これから猛暑に突入なのでファンレスPCの温度管理は時々しておいたほうがいいし、最近この手の記事が見当たらないので補填の意味で。

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