Comment 4 for bug 818771

More information:
Before suspend (AC power plugged in):
$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +16.0°C (crit = +108.0°C)
temp2: +39.0°C (crit = +105.0°C)
temp3: +42.0°C (crit = +108.0°C)
temp4: +43.0°C (crit = +105.0°C)
temp5: +36.8°C (crit = +108.0°C)
temp6: +40.0°C (crit = +110.0°C)
Suspend...
10 second later wake up (power button). temp6 = +49.0°C. Fan is ok, not always on!
Try again.
Suspend...
2 minutes later wake up (power button). temp6 = +90.0°C. Fan is always on.
Plug off AC power for 1s, then plug in again: temp6 step by step go back 40°C and fan go back normal speed.
(Sorry for my bad english)