Bad news.  It hangs when I do the usual stress test:

echo 1 > THM0/polling_frequency
sleep.sh
sleep.sh

The second sleep.sh hangs going to sleep.  It is in an endless loop
printing the following line, once per second (from the
polling_frequency):

  Execute Method: [\_TZ_.THM0._TMP] (Node c157bf88)

> Please also make sure you have vanilla DSDT

$ grep DSDT /boot/config-2.6.16-rc5.fake-thermal_active+passive
# CONFIG_ACPI_CUSTOM_DSDT is not set

> vanilla Kernel, and just hacked acpi_thermal_active/passive.

Only diff between pristine 2.6.16-rc5 tree and mine is:

diff -rup /tmp/linux-2.6.16-rc5/drivers/acpi/thermal.c 
/usr/src/linux-2.6.16-rc5/drivers/acpi/thermal.c
--- /tmp/linux-2.6.16-rc5/drivers/acpi/thermal.c        2006-02-27 
00:09:35.000000000 -0500
+++ /usr/src/linux-2.6.16-rc5/drivers/acpi/thermal.c    2006-03-16 
09:45:30.000000000 -0500
@@ -526,6 +526,8 @@ static void acpi_thermal_passive(struct 
 
        ACPI_FUNCTION_TRACE("acpi_thermal_passive");
 
+       return;
+
        if (!tz || !tz->trips.passive.flags.valid)
                return;
 
@@ -615,6 +617,8 @@ static void acpi_thermal_active(struct a
 
        ACPI_FUNCTION_TRACE("acpi_thermal_active");
 
+       return;
+
        if (!tz)
                return;
 

-Sanjoy

`Never underestimate the evil of which men of power are capable.'
         --Bertrand Russell, _War Crimes in Vietnam_, chapter 1.
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