After looking at the ACPI dump, it seems like the GPE17 is generated by
the EC0 (embedded controller):
Scope (_SB.PCI0.SBRG)
{
Device (EC0)
{
Name (_HID, EisaId ("PNP0C09") /* Embedded Controller Device */) //
_HID: Hardware ID
Name (_UID, One) // _UID: Unique ID
Name (_GPE, 0x17) // _GPE: General Purpose Events
...
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https://bugs.launchpad.net/bugs/2073538
Title:
kacpi_notify high cpu on interrupt gpe17
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