newbie question - how to read temerature

[Nate Lawson]

Bruno Ducrot wrote:
> On Mon, Jan 24, 2005 at 11:25:20PM -0500, Isaac Mushinsky wrote:
> 
>>I have Dell Precision 530 2x1.7 gHz Xeon. Trying to replace the Dell's noisy 
>>fans I wanted to make sure the CPU temperatures are normal. But I can find no 
>>way to read the temperatures at all. ASL dumped with acpidump does not 
>>compile.
>>
>>So as not to run too much text in the mail, here are the outputs:
>>
>>(compiled with ACPI_DEBUG)
>>
>>dmesg: http://omsk.mushinsky.net/acpi/dmesg
>>acpidump -t -d: http://omsk.mushinsky.net/acpi/asl
>>iasl errors: http://omsk.mushinsky.net/acpi/iasl
>>
>>finally, 
>>$ sysctl -a hw.acpi
>>hw.acpi.supported_sleep_state: S1 S3 S4 S5
>>hw.acpi.power_button_state: S5
>>hw.acpi.sleep_button_state: S1
>>hw.acpi.lid_switch_state: NONE
>>hw.acpi.standby_state: S1
>>hw.acpi.suspend_state: S3
>>hw.acpi.sleep_delay: 1
>>hw.acpi.s4bios: 0
>>hw.acpi.verbose: 0
>>hw.acpi.reset_video: 1
>>hw.acpi.cpu.cx_supported: C1/0
>>hw.acpi.cpu.cx_lowest: C1
>>hw.acpi.cpu.cx_usage: 100.00%
>>
> 
> 
> There is no thermal zone in this ASL.  So no hope to get it via ACPI.
> But, IIRC, there is a support under Linux, but for i8k models, which use
> a propritary, non documented BIOS interface from Dell.  I think this is
> the case with the Precision.

Yes, Dell chose not to export thermal info through ACPI for this laptop. 
  Mark Santrcoos (marks@) wrote a Dell SMM driver that probably 
duplicates the Linux driver Bruno mentions.  Perhaps he can post it for 
you to try.

-- 
Nate