linux-kernel - Re: swsusp and suspend2 like to overheat my laptop

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Message-ID: <Pine.LNX.4.58.0608090751340.2500@gandalf.stny.rr.com>
Date:	Wed, 9 Aug 2006 08:04:22 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Pavel Machek <pavel@...e.cz>
cc:	LKML <linux-kernel@...r.kernel.org>,
	Suspend2-devel@...ts.suspend2.net, linux-pm@...l.org,
	ncunningham@...uxmail.org
Subject: Re: swsusp and suspend2 like to overheat my laptop



On Wed, 9 Aug 2006, Steven Rostedt wrote:

> >
> > cat we get contents of /proc/acpi/thermal*/*/* ?
>
> I'm running after a poweroff (left it running over night in the hotel, and
> I'm still in the hotel).
>
> $ grep . /proc/acpi/thermal_zone/THRM/*
> /proc/acpi/thermal_zone/THRM/cooling_mode:<setting not supported>
> /proc/acpi/thermal_zone/THRM/cooling_mode:cooling mode: 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:             48 C
> /proc/acpi/thermal_zone/THRM/trip_points:critical (S5):           88 C
> /proc/acpi/thermal_zone/THRM/trip_points:passive:                 81 C: tc1=4 tc2=3 tsp=100 devices=0xcf6c2338
>
> Note thermal_zone/THRM was finished with bash tab completion so they are
> the only things that match the above glob expr.
>

Note: I just did a swsusp and resume and here's the same data:

$ grep . /proc/acpi/thermal_zone/THRM/*
/proc/acpi/thermal_zone/THRM/cooling_mode:<setting not supported>
/proc/acpi/thermal_zone/THRM/cooling_mode:cooling mode: 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:             60 C
/proc/acpi/thermal_zone/THRM/trip_points:critical (S5):           88 C
/proc/acpi/thermal_zone/THRM/trip_points:passive:                 81 C: tc1=4 tc2=3 tsp=100 devices=0xcf6c2338


And just leaving my system idle for a few minutes:

$ grep . /proc/acpi/thermal_zone/THRM/temperature
temperature:             62 C

and a few more minutes:

temperature:             64 C


And a few more:

temperature:             66 C


right now after typing this:

temperature:             69 C


So this definitely shows somethings not letting the CPU rest.

-- Steve


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