asking for help about "acpi_tz0: _CRT value is absurd, ignored (256.0C) "

Warren Block wblock at
Wed Sep 5 01:37:41 UTC 2012

On Tue, 4 Sep 2012, Lowell Gilbert wrote:

> "chiehhan" <chiehhan at> writes:
>> To whom may concern,
>> I am a greenhorn in the field of freebsd.And when I install Freebsd9.0 on my laptop HP NX6330,a control spam "acpi_tz0: _CRT value is absurd, ignored (256.0C)"occurs.
>> I learned some reference about sysctl and revised the configure file sysctl.conf,adding two lines below into sysctl.conf:
>> hw.acpi.thermal.user_override=1
>> hw.acpi.thermal.tz0._CRT=110.0C
>> but the control spam remains.
>> I read the source code about acpi_thermal.c,but still have no idea about how to solve this problem.I am a little desperated and turn freebsd-questions at for help.Would you please send me a solution?
> A solution to what problem? The "ignored" message isn't a problem on its
> own; do you think it causing some other trouble that you didn't describe?

I have a similar HP system.  That message is logged a couple of times a 
minute, hiding other messages in the logs and making them roll over 
quickly.  That particular system is a Pentium D which wasn't really 
worth much effort, but it would still be nice to see this annoyance 

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