Temperature sensor is absurd

[Sean Bruno]

Sean Bruno wrote:
> Using RELENG_6(updated) on a Shuttle xPC SD30G2, I am seeing the 
> following error message repeating on the console:
>    acpi_tz0: _TMP value is absurd, ignored (-73.0C)
>
> The temperature reported by the BIOS is ~31C for the CPU and ~32C for 
> the System.
>
> I agree that -73C is "absurd" for sure.  The system has the latest 
> BIOS(rev 7).   What should I look at to repair this condition?
>
> I have dumped the ACPI tables
> http://consultcsg.com/shuttle.asl
> http://consultcsg.com/shuttle.dsdt
I enabled debug and need some help interpreting the debug output for the 
thermal poll:

Execute Method: [\\_TZ_.THRM._TMP] (Node 0xc3322128)
exregion-0265 [188] ExSystemMemorySpaceHan: SystemMemory 0 (16 width) 
Address=       0   FF81A
exregion-0378 [189] ExSystemIoSpaceHandler: SystemIO 1 (8 width) 
Address=       0     295
exregion-0378 [188] ExSystemIoSpaceHandler: SystemIO 0 (8 width) 
Address=       0     296
exregion-0265 [188] ExSystemMemorySpaceHan: SystemMemory 0 (8 width) 
Address=       0   FF840
acpi_tz0: _TMP value is absurd, ignored (-73.0C)
Execute Method: [\\_TZ_.THRM._TMP] (Node 0xc3322128)
exregion-0265 [188] ExSystemMemorySpaceHan: SystemMemory 0 (16 width) 
Address=       0   FF81A
exregion-0378 [189] ExSystemIoSpaceHandler: SystemIO 1 (8 width) 
Address=       0     295
exregion-0378 [188] ExSystemIoSpaceHandler: SystemIO 0 (8 width) 
Address=       0     296
exregion-0265 [188] ExSystemMemorySpaceHan: SystemMemory 0 (8 width) 
Address=       0   FF840
acpi_tz0: _TMP value is absurd, ignored (-73.0C)


Sean