[SOLVED] 20% CPU Usage on Idling system from Interrupts

[tschanness]

Hi,
we installed Proxmox on two NASes that will not recive Firmware upgrades anymore ("just" an i3 w/ 16GB RAM) an everything works fine. The only problem is that one Interrupts hogs up the CPU.
With

grep . -r /sys/firmware/acpi/interrupts/

I found out that the culprit was:

/sys/firmware/acpi/interrupts/gpe12:3232861551   enabled

And running:

 echo disable > /sys/firmware/acpi/interrupts/gpe12

Fixes that issue. I'm just not sure what exactly thoe general Interrupts represent.

Can anyone shed some light on this for me? Thanks

Jonas