http://bugzilla.kernel.org/show_bug.cgi?id=12203





------- Comment #3 from [email protected]  2008-12-12 14:41 -------
I discovered the first of your points at random by hitting a patch in the
kernel git that disables such DMI messages because of their futility -
unfortunately, by then I'd already submitted this.  I did try compressed and
smaller versions of the mailing list posting... guess it's just me.

Anyway, I couldn't get an accurate "before" of the thermal_zone contents
because it seems to trigger quite early, but I got a consistent "after":

/proc/acpi/thermal_zone/THRM/cooling_mode:0 - Active; 1 - Passive
/proc/acpi/thermal_zone/THRM/polling_frequency:<polling disabled>
/proc/acpi/thermal_zone/THRM/state:state:                   ok
/proc/acpi/thermal_zone/THRM/temperature:temperature:             51 C
/proc/acpi/thermal_zone/THRM/trip_points:critical (S5):           155 C
/proc/acpi/thermal_zone/THRM/trip_points:passive:                 82 C: tc1=0
tc2=0 tsp=0 devices=

The only thing that changed between attempts at this was the actual temp but it
never exceeded 60 (I'd know about it - it sits on my lap).  It does have a
certain consistency in that the laptop's fans have to have kicked in before
this error will appear.  I don't know what the 82 is supposed to represent but
I assume that's the magic temp when things should happen - I very, very much
doubt this laptop ever hits 82C at all because burn-in tests with me watching
the temp don't see it go that hot even when stressing both cores and the GPU on
mains power (most I got was about 72C).

TO do that, the fans went to what I assume was full speed which doesn't happen
even on boot, and a clean boot from a cold start into Linux still gets me that
error once the fans power up even in their lowest setting around the 50C mark.

If I boot quickly (before the fans kick in) or keep the laptop cooler for a
while longer, I can probably get a "before".  I'll post if I manage it.


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