Last August (meaning 2008), my PowerBook’s screen started to flicker. It usually did this when the laptop was booting up or when waking up from sleep mode. I associated the flicker with the sudden change in temperature: asleep, the all aluminum body is quite cool to the touch, and it heats up rather quickly once it is on.
So last summer, I installed G4FanControl, a program that manually overrides the temperature settings at which the laptop’s three cooling fans come on. I have been able to set that temperature lower, keeping my laptop cooler for more than a year. And it has been doing fine. Until today.
Any further suggestions?
