https://bugzilla.kernel.org/show_bug.cgi?id=196447
Zhang Rui ([email protected]) changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |CLOSED CC| |[email protected] Resolution|--- |WILL_NOT_FIX --- Comment #3 from Zhang Rui ([email protected]) --- Method (_L0B, 0, NotSerialized) // _Lxx: Level-Triggered GPE { If (GPFG && \_SB.PCI0.LPC.NFCI) { GPFG = 0x00 Notify (\_SB.PCI0.SMBU.NFC, 0xC0) // Hardware-Specific } } Device (NFC) { Name (_HID, EisaId ("BCM2F21")) // _HID: Hardware ID Name (_CID, EisaId ("BCM2F21")) // _CID: Compatible ID Name (_UID, 0x00) // _UID: Unique ID ... } According to google result, BCM2F21 sounds like a NFC SMBus device, and we don't have the device support in Linux. So I think this is an interrupt storm issue that the NFC event is triggered for unknown reason, and then it keeps on firing as it is not handled in Linux kernel. please use boot option acpi_mask_gpe=0x0b as the workaround for this issue. please feel free to reopen it if the high cpu usage issue still exists with the boot option. -- You are receiving this mail because: You are watching the assignee of the bug. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ acpi-bugzilla mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
