FreeBSD 6.1-STABLE: Unexplained power off

[Android Andrew]

On Tue, 15 Aug 2006 13:31:08 +0300, Alexey Karagodov <karagodov at gmail.com>  
wrote:

> are you realy SURE that you workstation turned off? i think it just
> "sleeping" ;-) .
> after power and boot up is your file-systems "clean" or fsck takes place
> during boot-time?
> please, check your power-save settings in BIOS and is OS ...

Thanks for idea Alexey!
I think it is not "sleeping" because log messages look like ones after  
crash:

Aug 15 00:23:04 callisto kernel: Trying to mount root from ufs:/dev/ar0s1a
Aug 15 00:23:04 callisto kernel: WARNING: / was not properly dismounted
Aug 15 00:23:04 callisto kernel: WARNING: /home was not properly dismounted
Aug 15 00:23:04 callisto kernel: WARNING: /tmp was not properly dismounted
Aug 15 00:23:04 callisto kernel: WARNING: /usr was not properly dismounted
Aug 15 00:23:04 callisto kernel: WARNING: /var was not properly dismounted

Sometimes system boots in single-user mode with "run fsck mannualy"  
message.

I've tried to play with power-save settnigs in BIOS and with kernel  
apm-module but it takes no effect.

There are two SATA-HDD in my system. They are configured as RAID0 ("Intel  
Matrix" on-board controller). I guess the problem could be here, but I  
don't know how to check it.

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