MAMEWorld Forums - The Loony Bin - Re: There is an ice pack on my laptop.

> Hours? If I'm lucky, I'll be able to hit continue and post this.
>
> (busted fan on laptop)

Can also be ACPI issues, many manufacturers write the BIOS ACPI tables so that they only (barely) work with Windows. I heard HP's ACPI code is especially horrid. In extreme cases that means no fan control and no CPU power stepping under Linux, resulting in shorter battery life and of course overheating.

It's possible this could be fixed in the latest BIOS so try updating. If you have "ACPI 2.0" and "ACPI APIC" settings in the BIOS, try enabling them.

If it's a fairly popular laptop chances are good that there are community provided, patched ACPI tables available for it. You can then use the Grub boot loader to load and inject the patched ACPI tables, overriding the built-in ones, making power management work again. I've seen forums where these mythical patched ACPI tables are shared. You're looking for DSDT and possibly SSDT tables.

I think there are also various boot-time flags you can experiment with that will let Linux handle Power Management in different ways.

Try googling Laptop-model + ACPI + Linux.

S