Hi,
I ran the kernel with the acpi_apic_instance=2 option and I found that
the fan works different. The power supplier was attached to my laptop at
the time which means that the fan should rotate continuously like
usually, but it starts to work only when the cooling is needed. The
computer with default instance works in that way only when the power
comes from battery. So it seems that the default acpi table depends on
the power state.
The benefit of using acpi_apic_instance=2 is the quiet work of the
plugged machine. I did not try to change the acpi instance without power
supplier.
cacy
I have sony vaio SZ series
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