I can confirm this bug on on my HP Compaq 6715s. Also happened with kernel upgrade from 2.6.32-30 to 2.6.32-31. Had to downgrade back, on 2.6.32-30, the points are: $ cat /proc/acpi/thermal_zone/TZ1/trip_points critical (S5): 105 C passive: 95 C: tc1=1 tc2=2 tsp=100 devices=CPU0 CPU1 active[0]: 75 C: devices=C399 active[1]: 65 C: devices=C39A active[2]: 55 C: devices=C39B active[3]: 40 C: devices=C39C Pavel