On Sat 2016-11-05 16:04:58, Henrique de Moraes Holschuh wrote:

On Sat, 05 Nov 2016, Pavel Machek wrote:

quoted

[  825.759661] thinkpad_acpi: THERMAL EMERGENCY: a sensor reports something is extremely hot!
[  825.761935] thinkpad_acpi: temperatures (Celsius): 101 49 N/A 78 33 N/A 33 N/A 47 50 N/A N/A N/A N/A N/A N/A

Oh boy, that must be the second time in a decade that I see that
codepath triggering.  It is the second-level alert that the ThinkPad is
about to catch fire.

It should have logged a "is too hot!" first-level alert earlier, but
this depends on the EC and not the driver.  Maybe the temperature raised
too fast.

I don't think I'm seeing the "is too hot" messages. Actually.. even
the "THERMAL EMERGENCY" messages seem to have too low severity, so
they are hidden in syslogs -- they don't go to all the consoles.

In Windows, the system would attempt to hibernate or shutdown.  I would
be quite happy to have thinkpad-acpi trigger such behavior as well,
patches (or guidance) are welcome ;-)

Sorry, just guidance for now:

+#include <linux/reboot.h>
+               orderly_poweroff(true);

[can be called from weird contexts, afaict]. 

Anyway, if that temperature goes about 1~2°C higher, the EC should cut
power to your motherboard.  Apparently, the built-in thermal protection
clock modulation on the Intel processor is somehow saving your box from
that forced power-off.

Actually, the machine _will_ shut down some time after that. It seems
that one of acpi trip points jumps to 128C which forces shutdown.

Thanks and best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html