cpu overheat

今天把无线网卡在freebsd下配好了。freebsd 8之后,无线网卡的配置方式还是和以前很不一样的,它需要创建单独的wlan虚拟网卡。
不过操作方式也很简单,只需要改2个地方,一个是/etc/rc.conf中加上
wlans_iwn0="wlan0"
ifconfig_wlan0="WPA DHCP"
然后编辑/etc/wpa_supplicant.conf,最简单的方式就是只加这么几行:
network={
ssid="scmdlink"
psk="mypass"
priority=5
}
刚才打开firefox在看duowan,突然就开始shutdown了。
重启之后查日志,发现
Feb 17 12:56:40 fb kernel: acpi_tz1: temperature 96.0C: decreasing clock speed f
rom 2401 MHz to 1800 MHz
Feb 17 12:57:40 fb kernel: acpi_tz1: temperature 94.0C: resuming previous clock
speed (2401 MHz)
Feb 17 12:58:09 fb wpa_supplicant[86616]: CTRL-EVENT-SCAN-RESULTS
Feb 17 12:58:40 fb kernel: acpi_tz1: temperature 96.0C: decreasing clock speed f
rom 2401 MHz to 2100 MHz
Feb 17 12:58:57 fb root: WARNING: system temperature too high, shutting down soon!
Feb 17 12:59:07 fb kernel: acpi_tz1: WARNING - current temperature (100.1C) exceeds safe limits
居然是CPU 过热导致的。t400的散热是极好的,我用了一年多,还从未因为散热问题死机或重启过。orz...这是冬天啊
重启之后,CPU的温度一直持续在50-60度左右
dev.cpu.0.temperature: 57.0C
dev.cpu.1.temperature: 67.0C

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