最近電腦有些發神經，動不動就死機了，而且還發出滴、滴、滴報警聲，以我的知覺一定是那個地方出了問題。使用Linux的好處就有這麼一點，無論你的系統發生了什麼你都可以很容易的知曉，一個dmesg就可以發現原來是cpu的溫度太高，造成系統的不穩定。我想是最近天氣太熱的緣故，而且我的cpu風扇已經用了很久了，可能有些老化了，散熱效果不那麼好了。
於是決定給自己的pc系統換個風扇。Linux系統下查看cpu風扇的工具的名字叫lm-sensors，這個工具在網上一下就能搜索到了，這真是一個好東西，請看下面的效果。
dwj@beyond:~$ sensors
w83627thf-isa-0290
Adapter: ISA adapter
VCore: +1.42 V (min = +0.00 V, max = +3.84 V)
+12V: +11.80 V (min = +4.86 V, max = +0.61 V) ALARM
+3.3V: +3.33 V (min = +1.02 V, max = +3.66 V)
+5V: +5.04 V (min = +0.13 V, max = +0.27 V) ALARM
-12V: +6.06 V (min = -14.91 V, max = -12.28 V) ALARM
V5SB: +5.03 V (min = +1.16 V, max = +3.12 V) ALARM
VBat: +0.03 V (min = +1.54 V, max = +1.68 V) ALARM
fan1: 0 RPM (min = 263 RPM, div = 128) ALARM
CPU Fan: 2667 RPM (min = -1 RPM, div = 2) ALARM
fan3: 0 RPM (min = 439 RPM, div = 128) ALARM
M/B Temp: +44°C (high = +0°C, hyst = +0°C) sensor = thermistor ALARM
CPU Temp: +51.0°C (high = +80°C, hyst = +75°C) sensor = thermistor
temp3: -48.0°C (high = +80°C, hyst = +75°C) sensor = thermistor
vid: +1.388 V (VRM Version 10.0)
alarms:
beep_enable:
Sound alarm enabled
