Re: regression: 2.6.32-rc8 shuts down after reaching critical temperature

[Christoph Hellwig <hch@lst.de>]

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On Wed, Nov 25, 2009 at 04:56:19PM -0500, Len Brown wrote:
> "thermal.nocrt=1" will disable the actual shutdown -- but you'll
> still get the warning -- which might be helpful.  "thermal.crt=105"
> would override all critical trip points to be 105, for example,
> but otherwise not change any behaviour.

Well, I suspect the warnings are there for a reason, e.g. with 2.6.32-rc
I also hear the fan regularly while I've almost never done before.  So I
guess the reason for it is that throtteling might have problems.

> > I've done some attempts at bisecting it, but for most of the 2.6.32-rc
> > series the system crashes during boot in ACPI code with a backtrace
> > longer than the screen can display.
> 
> Hmm, I don't have a T500, but I've not seen such crashes during -rc.
> Please send along your .config

Attached.

> Do you still get them when disabling the thinkpad-acpi driver?

I'll try.  This is my main work machine (and I'm travelling right now),
so any sort of bisection and testing will take a while..

> Probably the most interesting place to bisect is drivers/acpi/ec.c
> 
> If you can send along the dmesg from the recent failing kernel,

That is failing to boot, or the 2.6.32-rc8 kernel?  No chance to capture
the dmesg of the one failing to boot unfortunately..

> plus the output from "grep . /proc/acpi/thermal_zone/*/*"
> that may be helpful.

brick:~# grep . /proc/acpi/thermal_zone/*/*
/proc/acpi/thermal_zone/THM0/cooling_mode:<setting not supported>
/proc/acpi/thermal_zone/THM0/polling_frequency:<polling disabled>
/proc/acpi/thermal_zone/THM0/state:state:                   ok
/proc/acpi/thermal_zone/THM0/temperature:temperature:             46 C
/proc/acpi/thermal_zone/THM0/trip_points:critical (S5):           127 C
/proc/acpi/thermal_zone/THM1/cooling_mode:<setting not supported>
/proc/acpi/thermal_zone/THM1/polling_frequency:<polling disabled>
/proc/acpi/thermal_zone/THM1/state:state:                   ok
/proc/acpi/thermal_zone/THM1/temperature:temperature:             49 C
/proc/acpi/thermal_zone/THM1/trip_points:critical (S5):           100 C
/proc/acpi/thermal_zone/THM1/trip_points:passive:                 96 C:
tc1=5 tc2=4 tsp=600 devices=CPU0 CPU1 

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