overheating laptop when running cpu emulator

Joe Talbott josepht at cstone.net
Mon Mar 27 12:28:13 PST 2006

On Mon, Mar 27, 2006 at 09:55:19PM +0200, Erik Wikstr?m wrote:
> On 2006-03-27 20:34, Jake Maciejewski wrote:
> >Do you have the laptop resting on a flat surface? My University used
> >Compaq and HP laptops (I have an n800w), and the solution to overheating
> >that I always heard from fellow students was to not leave the laptop on
> >flat surfaces. They'd prop laptops up with all sorts of things like
> >erasers, triangular drafting scales, and folded paper.
> >
> >Also, are those temperatures supposed to be Celsius? I'm nut sure about
> >Pentium Ms, but 100F wouldn't be hot for most modern CPUs.
> >
> >On Mon, 2006-03-27 at 12:01 -0500, Joe Talbott wrote:
> >>Hi,
> >>
> >>My laptop (HP nc8000) overheats (85-100F) when running cpu simulators 
> >>like bochs
> >>and simulavr.  I guess this is a hardware problem but wanted to rule
> >>out any misconfigurations on my part or software issues that may be
> >>related.  The laptop doesn't overheat during buildworlds though this
> >>isn't a constant CPU workout either.  Included is a copy of
> >>/var/run/dmesg.boot and my kernel config file.
> 100F would be quite cool, perhaps even for a Pentium M (~37C). On the 
> other hand 100C would be quite hot, especially for a mobile processor, 
> are you sure that your fan is working and that the heatsink hasn't come 
> loose?

I meant 100C not 100F, sorry about that.  It's a Pentium M.  I've
checked the fan and heatsink and both appear to be working correctly
and properly attached.  I've blown out the vents as well.  I can avoid
overheating by throttling the cpu via hw.acpi.cpu.throttle_state but
that gets really slow by the time the temps are below 75C.  


More information about the Users mailing list