The output of ls /proc/acpi/thermal_zone is: THRM the output of ls /proc/acpi/thermal_zone/THRM is: cooling_mode polling_frequency state temperature trip_points and the output of cat /proc/acpi/thermal_zone/*/* is: cooling mode: active polling frequency: 30 seconds state: ok temperature: 49 C critical (S5): 105 C passive: 79 C: tc1=3 tc2=1 tsp=80 devices=0xf7e9c720 active[0]: 65 C: devices=0xc17e4d9c active[1]: 55 C: devices=0xc17e4d38 Some remarks: - the polling frequency is not set by default so I run a script on startup which sets the polling frequency to 30 secs - the state reported by /proc/acpi/thermal_zone/THRM/state changes correctly according to changing temperatures but it is not in accordance with the real state of the cooler. - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html