Rene Gollent wrote on Fri, 23 Apr 2010 15:02:35 -0400 > On Fri, Apr 23, 2010 at 2:59 PM, Jorge G. Mare <koki@xxxxxxxxxxxxx> wrote: > > OK, here is the scoop. With ACPI enabled and APM disabled, the fan seems to > > be working fine and system power down works. If I enable APM, though, the > > fan runs at very high-revolution 100% of the time, regardless of whether > > ACPI is on or not. > > That's slightly less disconcerting at least, the original problem we > were worried about was the fans not running at all, though fans > running at 100% is certainly a nuisance. Since there are two fans (cpu and ps), I checked visually just to make sure that the cpu fan is working, and indeed it is. Moreover, if I raise the cpu load by playing a few videos videos, then I can also tell that the fan speed increases with the higher cpu load. IOW, it look like ACPI is working fine here. FWIW, Jorge / aka Koki