Re: ACPI: Invalid active2 threshold

[Arkadiusz Miskiewicz <a.miskiewicz@gmail.com>]

On Friday 05 of September 2014, Zhang Rui wrote:
> On Fri, 2014-09-05 at 07:03 +0200, Arkadiusz Miskiewicz wrote:
> > On Friday 05 of September 2014, Zhang Rui wrote:
> > > On Thu, 2014-09-04 at 21:21 +0200, Rafael J. Wysocki wrote:
> > > > On Thursday, September 04, 2014 06:40:04 PM Arkadiusz Miskiewicz 
wrote:
> > > > > Hi.
> > > > > 
> > > > > I'm using 3.17.0-rc3-00002-g7505cea kernel on Dell XPS 15 machine:
> > > > > DMI: Dell Inc. XPS 15 9530/XPS 15 9530, BIOS A06 07/16/2014
> > > > > (this is latest bios)
> > > > > 
> > > > > After loading thermal acpi driver I get:
> > > > > 
> > > > > [54136.633643] ACPI: Invalid active2 threshold
> > > > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> 
> this is a BIOS bug. _AC2 is defined while _AL2 is not, thus this is an
> invalid active trip point.
> But it won't hurt IMO, because there are two ACPI Fan devices, and they
> are both used (for active trip point 0 and 1) in the ACPI thermal
> management in your laptop.
> 
> > > > > [54136.633761] thermal LNXTHERM:00: registered as thermal_zone6
> > > > > [54136.633763] ACPI: Thermal Zone [TZ00] (28 C)
> > > > > [54136.634009] thermal LNXTHERM:01: registered as thermal_zone7
> > > > > [54136.634011] ACPI: Thermal Zone [TZ01] (-266 C)
> 
> This is more serious to me.
> can you please file a bug at
> https://bugzilla.kernel.org/enter_bug.cgi?product=ACPI
> and attach your acpidump output there.

Done
https://bugzilla.kernel.org/show_bug.cgi?id=83921

> 
> thanks,
> rui
> 
> > > > > I assume bios is buggy (right?)
> > > > 
> > > > Well, we don't seem to like the value for some reason.  Also the -266
> > > > C for TZ01 looks suspicious.
> > > > 
> > > > > What problems can happen to this machine due to this problem? It is
> > > > > quite hot frequently, so I wonder if there is some thermal
> > > > > management problem with it.
> > > > 
> > > > I'm leaving this question to Rui.
> > > 
> > > It looks like ACPI thermal driver fails to parse _AC2 control methods.
> > > please attach the acpidump output.


-- 
Arkadiusz Miśkiewicz, arekm / maven.pl

Q: vger.kernel.org postmasters - always rude and impolite, hmm?
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