最近电脑有些发神经，动不动就死机了，而且还发出滴、滴、滴报警声，以我的知觉一定是那个地方出了问题。使用Linux的好处就有这么一点，无论你的系统发生了什么你都可以很容易的知晓，一个dmesg就可以发现原来是cpu的温度太高，造成系统的不稳定。我想是最近天气太热的缘故，而且我的cpu风扇已经用了很久了，可能有些老化了，散热效果不那么好了。
于是决定给自己的pc系统换个风扇。Linux系统下查看cpu风扇的工具的名字叫lm-sensors，这个工具在网上一下就能搜索到了，这真是一个好东西，请看下面的效果。
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