Date: Sat, 14 Jun 2014 02:22:00 +1000 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: hiren panchasara <hiren.panchasara@gmail.com> Cc: "freebsd-acpi@freebsd.org" <freebsd-acpi@freebsd.org>, Eric Neblock <cen5848@louisiana.edu> Subject: Re: Missing: hw.acpi.thermal.tz%d._HOT Message-ID: <20140614013631.J10629@sola.nimnet.asn.au> In-Reply-To: <CALCpEUEFmg4twoiDC1czEAXOanmLbR9DarvRcg9h8o=Xc3dwjg@mail.gmail.com> References: <1402412054.2426.13.camel@canpc36.cacs.louisiana.edu> <20140611011810.V10629@sola.nimnet.asn.au> <1402414819.17836.2.camel@canpc36.cacs.louisiana.edu> <CALCpEUEFmg4twoiDC1czEAXOanmLbR9DarvRcg9h8o=Xc3dwjg@mail.gmail.com>
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On Thu, 12 Jun 2014 14:28:33 -0700, hiren panchasara wrote:
> On Tue, Jun 10, 2014 at 8:40 AM, Eric Neblock <cen5848@louisiana.edu> wrote:
> > On Wed, 2014-06-11 at 01:33 +1000, Ian Smith wrote:
> >> On Tue, 10 Jun 2014 09:54:14 -0500, Eric Neblock wrote:
> >> > Hello all,
> >> > I'm trying to figure out what is the _HOT temperature on my particular
> >> > processor. I'm running FreeBSD 10 GENERIC on a Sunfire X2200.
> >> >
> >> > The processor is an Dual Core AMD Opteron 2218.
> >> >
> >> > In the GENERIC kernel, acpi is built in; so, kldload acpi fails. I've
> >> > also loaded the amdtemp module at boot time to figure out what the
> >> > current temp of the processor is.
> >> >
> >> > With all of that, when performing `sysctl -a` I never seem to be able to
> >> > pull up the _HOT value.
> >> >
> >> > Are there any suggestions on how to be able to view it?
> >>
> >> Many thermal zones seen, including some CPUs, don't specify any _HOT
> >> value, just _PSV and _CRT, which should trigger passive cooling (eg
> >> clock slowing or throttling) and emergency shutdown, respectively.
> >>
> >> What says 'sysctl hw.acpi.thermal' ?
> >>
> >> cheers, Ian
> >
> > The result is as follows:
> >
> > sysctl: Unknown oid 'hw.acpi.thermal' : No such file or directory
>
> Similar thing here at home desktop running -CURRENT:
>
> CPU: AMD FX(tm)-8350 Eight-Core Processor (4000.24-MHz K8-class CPU)
> Origin="AuthenticAMD" Id=0x600f20 Family=0x15 Model=0x2 Stepping=0
>
> acpi0: <7596MS A7596100> on motherboard
>
> Other related bits:
>
> # sysctl hw.acpi
> hw.acpi.supported_sleep_state: S3 S4 S5
> hw.acpi.power_button_state: S5
> hw.acpi.sleep_button_state: S3
> hw.acpi.lid_switch_state: NONE
> hw.acpi.standby_state: NONE
> hw.acpi.suspend_state: S3
> hw.acpi.sleep_delay: 1
> hw.acpi.s4bios: 0
> hw.acpi.verbose: 0
> hw.acpi.disable_on_reboot: 0
> hw.acpi.handle_reboot: 0
> hw.acpi.reset_video: 0
> hw.acpi.cpu.cx_lowest: C8
> #
>
> # sysctl dev.amdtemp
> dev.amdtemp.0.%desc: AMD CPU On-Die Thermal Sensors
> dev.amdtemp.0.%driver: amdtemp
> dev.amdtemp.0.%parent: hostb4
> dev.amdtemp.0.sensor_offset: 0
> dev.amdtemp.0.core0.sensor0: 15.3C
>
> # sysctl -a dev.cpu | grep temp
> dev.cpu.0.temperature: 15.2C
> dev.cpu.1.temperature: 15.2C
> dev.cpu.2.temperature: 15.2C
> dev.cpu.3.temperature: 15.2C
> dev.cpu.4.temperature: 15.2C
> dev.cpu.5.temperature: 15.2C
> dev.cpu.6.temperature: 15.2C
> dev.cpu.7.temperature: 15.2C
>
> I am not sure how this ^ relates to what acpi reports under thermal.
Well first, unless you've just turned it on, it's idling and lives in a
refrigerator or coldroom, those temperatures are at best a third of the
minimum I'd expect to see reported .. and they wouldn't all be the same.
And neither of these are reporting hw.acpi.thermal .. is it because the
BIOS / ACPI doesn't present thermal zone information? Or there aren't
suitable drivers to interpret it? I've no idea, but does seem curious.
Any output from?
# acpidump -dt | egrep -i 'TZ|thermal'
If so, you might want to put your full ASL up somewhere. Note: I'm not
at all qualified to interpret it, just that I'd expect there to be some;
eg on a Lenovo X200 (Core2 Duo):
root@x200:~ # acpidump -dt | egrep -i 'TZ|thermal'
Notify (\_TZ.THM0, 0x80)
Notify (\_TZ.THM1, 0x80)
Notify (\_TZ.THM0, 0x80)
Notify (\_TZ.THM1, 0x80)
"AdaptiveThermalManagementAC"
"AdaptiveThermalManagementBattery"
Notify (\_TZ.THM0, 0x80)
Notify (\_TZ.THM1, 0x80)
Notify (\_TZ.THM1, 0x80)
Notify (\_TZ.THM0, 0x81)
Scope (\_TZ)
ThermalZone (THM0)
ThermalZone (THM1)
Return (\_TZ.THM0._TMP ())
Notify (\_TZ.THM0, 0x80)
cheers, Ian
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