I fond one line in /proc/interrupts
Code:
9:          82341288         0          0          0          0          0          0          0   IO-APIC    9-fasteoi   acpi
and in /sys/firmware/acpi/interrupts/gpe24
Code:
82341398 enabled

What the mean of 9 and gpe24?
And how to find the source of the interrupt

Thank you very much.