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From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de>
Cc: linux-acpi@vger.kernel.org
Subject: Re: Probably wrong temparature for thermal zone on HP DL380 G7 server
Date: Mon, 4 Apr 2011 16:04:33 +0100	[thread overview]
Message-ID: <20110404150433.GA19455@srcf.ucam.org> (raw)
In-Reply-To: <4D99F1D8020000A100005903@gwsmtp1.uni-regensburg.de>

On Mon, Apr 04, 2011 at 04:29:12PM +0200, Ulrich Windl wrote:

> No support for device type: battery
>      Thermal 1: ok, 8.0 degrees C
> No support for device type: ac_adapter

>From the DSDT on a DL580 G7:

    Scope (_TZ)
    {
        Name (\TEMP, 0x0AFF)
...
           Method (_TMP, 0, NotSerialized)
            {
                Store ("_TMP Method", Debug)
                Return (TEMP)
            }

And there's nothing else that touches TEMP (there's a different TEMP in 
the CPU setup tables, but they're in different namespaces). So _TMP 
always returns 0x0AFF, which is 2815, which is 281.5 kelvin, which is 
8.3 degrees C.

Looks like a BIOS bug.
-- 
Matthew Garrett | mjg59@srcf.ucam.org

      reply	other threads:[~2011-04-04 15:04 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-04 14:29 Probably wrong temparature for thermal zone on HP DL380 G7 server Ulrich Windl
2011-04-04 15:04 ` Matthew Garrett [this message]

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