ACPI I/O resource conflict between piix4_smbus and ACPI region SOR1

read here: http://www.mail-archive.com/acpi-bugzilla@lists.sourceforge.net/msg26823.html

This conflict is designed into the driver.  Linux is simply
recognizing that the BIOS AML is accessing the same resources
and thus automatically dis-allowing the driver to load.

If it is important that you run i2c_piix4,
you can disable ACPI via BIOS SETUP or cmdline "acpi=off".
You will likely lose more by disabling ACPI
than you will by disabling i2c_piix4, but it is technically your choice…

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